Keywords : Alloy, carbon steels, low-alloy steels, high-alloy steels
NES 769 Approval System for Welding Consumables for Structural Steels Category 2
description
Transcript of NES 769 Approval System for Welding Consumables for Structural Steels Category 2
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Ministry of Defence Defence Standard 02-769 (NES 769)
Issue 1 Publication Date 01 April 2000
Incorporating NES 769 Category 2
Issue 4 Publication Date December 1992
Approval System For WeldingConsumables For Structural Steels
DStanDStan is now the publishing authority for all Maritime Standards (formerly NESs). Any reference to any other publishing authority throughout this standard should be ignored.Any queries regarding this or any other Defence Standard should be referred to the DStan Helpdesk as detailed at the back of this document.
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AMENDMENT RECORD
Amd No Date Text Affected Signature and Date
REVISION NOTE
This standard is raised to Issue 1 to update its content.
HISTORICAL RECORD
This standard supersedes the following:
Naval Engineering Standard (NES) 769 Issue 4 dated December 1992.
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Ministry of Defence
Naval Engineering Standard
NES 769 Issue 4 (Reformatted) December 1992
APPROVAL SYSTEM FOR WELDING CONSUMABLESFOR STRUCTURAL STEELS
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This NES Supersedes
NES 769 ISSUE 3
Record of Amendments
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iNAVAL ENGINEERING STANDARD 769
ISSUE 4 (INTERIM) (REFORMATTED)
APPROVAL SYSTEM FORWELDING CONSUMABLES
FOR STRUCTURAL STEELS
The issue and use of this Standard
is authorized for use in MOD contracts
by MOD(PE) Sea Systems and
the Naval Support Command
ECROWN COPYRIGHT
Published by:
Director of Naval ArchitectureProcurement Executive, Ministry of DefenceSea Systems, Foxhill, Bath BA1 5AB
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NES 769Issue 4 (Reformatted)
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SCOPE
1. This NES defines the general requirements, production control, test procedures and approvalsystems for welding consumables for use on MOD(PE) SSC structural steels.
2. It includes the additional special evaluation test requirements to be conducted by DRADunfermline (Marine Division) for welding consumables intended for use with submarinesteels ie UXW, QT28, QT35, HY80 and QIN together with the requirements for consumablesintended to be used for welding MOD(PE) SSC structural steels to submarine steels.
3. The NES lists all the currently approved welding consumables at Annex D.
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NES 769Issue 4 (Reformatted)
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FOREWORD
Sponsorship
1. ThisNaval Engineering Standard (NES) is sponsored by theProcurement Executive, Ministryof Defence, Director Naval Architecture (Submarines), (DNA(SM)), Section NA 115.
2. This NES is an interim issue prior to being reissued as a Three Part Standard. It has beenreissued to update the lists of approved Welding Consumables (Appendix B) and to reflectchanges in department nomenclature.
3. If it is found to be unsuitable for any particular requirement the Sponsor is to be informed inwriting with a copy to Director Naval Architecture (Surface Ships), (DNA(SS)), SectionNA 145, for Ship Systems and Equipment.
4. Any user of this NES either within MOD or in industry may propose an amendment to it.Proposals for amendments which are:
a. not directly applicable to a particular contract are to be made to the Sponsor of theNES;
b. directly applicable to a particular contract are to be dealt with using existing proceduresor as specified in the contract.
5. No alteration may be made to this NES except by the issue of an authorized amendment.
6. Unless otherwise stated, reference in this NES to approval, approved, authorized or similarterms means by the Ministry of Defence in writing.
7. Any significant amendments that may be made to this NES at a later date will be indicatedby a vertical sideline. Deletions will be indicated by 000 appearing at the end of the lineintervals.
8. Extracts from British Standards within this NES have been included with the permission ofthe British Standards Institution.
Conditions of Release
General
9. This Naval Engineering Standard (NES) has been prepared for the use of the Crown and ofits contractors in the execution of contracts for the Crown. The Crown hereby excludes allliability (other than liability for death or personal injury) whatsoever and howsoever arising(including but without limitation, negligence on the part of the Crown, its servants or agents)for any loss or damage however caused where the NES is used for any other purpose.
10. This document is Crown Copyright and the information herein may be subject to Crown orthird party rights. It is not to be released, reproduced or published without written permissionof the MOD.
11. The Crown reserves the right to amend or modify the contents of this NES without consultingor informing any holder.
MOD Tender or Contract Process
12. ThisNES is the property of the Crown and unless otherwise authorized in writing by theMODmust be returned on completion of the contract, or submission of the tender, in connectionwith which it is issued.
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13. When this NES is used in connection with aMOD tender or contract, the user is to ensure thathe is in possession of the appropriate version of each document, including related documents,relevant to each particular tender or contract. Enquiries in this connection may be made ofthe local MOD(PE) Quality Assurance Representative or the Authority named in the tenderor contract.
14. When NES are incorporated into MOD contracts, users are responsible for their correctapplication and for complying with contracts and any other statutory requirements.Compliance with an NES does not of itself confer immunity from legal obligations.
Related Documents
15. In the tender and procurement processes the related documents listed in each section andAnnex A can be obtained as follows:
a. British Standards British Standards Institution,389 Chiswick High Road,London W4 4AL
b. Defence Standards Directorate of Standardization and Safety Policy,Stan 1, Kentigern House, 65 Brown Street,Glasgow G2 8EX
c. Naval Engineering Standards CSE3a, CSE Llangennech, Llanelli,Dyfed SA14 8YP
d. Other documents Tender or Contract Sponsor to advise.
Note: Tender or Contract Sponsor can advise in cases of difficulty.
16. All applications to Ministry Establishments for related documents are to quote the relevantMOD Invitation to Tender or Contract Number and date, together with the sponsoringDirectorate and the Tender or Contract Sponsor.
17. Prime Contractors are responsible for supplying their subcontractors with relevantdocumentation, including specifications, standards and drawings.
Health and Safety
Warning
18. ThisNESmay call for the use of processes, substances and/or procedures thatmay be injuriousto health if adequate precautions are not taken. It refers only to technical suitability and inno way absolves either the supplier or the user from statutory obligations relating to healthand safety at any stage of manufacture or use. Where attention is drawn to hazards, thosequoted may not necessarily be exhaustive.
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CONTENTSPage No
TITLE PAGE i. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCOPE iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FOREWORD v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sponsorship v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Conditions of Release v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MOD Tender or Contract Process v. . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documents vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Health and Safety vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTENTS vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 1. GENERAL INFORMATION 1.1. . . . . . . . . . . . . . . . . .1.1 Batch Testing 1.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.2 Other Consumables 1.1. . . . . . . . . . . . . . . . . . . . . . . . . .1.3 DRA Dunfermline (Marine Division) 1.1. . . . . . . . . . . .
SECTION 2. APPROVAL SYSTEM 2.1. . . . . . . . . . . . . . . . . . . . . . . .2.1 Electrode Manufacturers Approval 2.1. . . . . . . . . . . . .2.1.1 General 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 Initial Tests 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3 Production Control 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . .2.4 Periodic Check Tests 2.1. . . . . . . . . . . . . . . . . . . . . . . . . .2.5 Re-tests 2.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.6 Test Panels 2.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7 Mechanical Properties 2.2. . . . . . . . . . . . . . . . . . . . . . . .2.8 Chemical Analysis 2.2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE 2.1 2.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.9 Welding Control Parameters (Welding Conditions
Used in Tests) 2.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.10 Fabricators Approval 2.3. . . . . . . . . . . . . . . . . . . . . . . .
TABLE 2.2 WELDING CONSUMABLEAPPROVAL DATA MANUAL METALARC ELECTRODES 2.5. . . . . . . . . . . . . . . . . . . . . . . . .TABLE 2.3 WELDING CONSUMABLEAPPROVAL DATA SUBMERGED ARC 2.6. . . . . . . .TABLE 2.4 WELDING CONSUMABLEAPPROVAL DATA METAL INERT GAS 2.7. . . . . . . .
SECTION 3. MANUAL METAL ARC ELECTRODESELECTRODE MANUFACTURERS APPROVAL 3.1
3.1 Product Control Requirements 3.1. . . . . . . . . . . . . . . . .3.2 Test Requirements for all Classes of MMA
Electrodes including Hydrogen ControlledElectrodes 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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SECTION 4. SUBMERGED ARCWELDING CONSUMABLES,ELECTRODE MANUFACTURERS APPROVAL 4.1
4.1 Product Control Requirements 4.1. . . . . . . . . . . . . . . . .4.2 Test Requirements for Submerged Arc Wire and
Flux Combinations 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . .4.3 Initial Approval 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.4 Multi-Run Technique All-Weld Metal 4.2. . . . . . . . . . .4.5 Multi-Run Technique V-Butt Test 4.2. . . . . . . . . . . . . . .4.6 Square Edge Two Run Technique 4.2. . . . . . . . . . . . . . .4.7 Periodic Check Tests 4.3. . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5. MIG WELDING CONSUMABLESELECTRODEMANUFACTURERS APPROVAL 5.1. . . . . . . . . . . . .
5.1 Product Control Requirements 5.1. . . . . . . . . . . . . . . . .5.2 Test Requirements for MIG Wire/Gas
Combinations 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.3 Initial Approval 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.4 Multi-Run Technique All-Weld Metal 5.1. . . . . . . . . . .5.5 Multi-Run Technique V-Butt Test 5.1. . . . . . . . . . . . . . .5.6 Square Edge Two Run Technique 5.2. . . . . . . . . . . . . . .5.7 Periodic Check Tests 5.3. . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6. CONSUMABLES FOR WELDING SUBMARINESTEELS 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Batch Control 6.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.2 Batch Definitions 6.3. . . . . . . . . . . . . . . . . . . . . . . . . . . .6.3 Batch Control Tests 6.4. . . . . . . . . . . . . . . . . . . . . . . . . .
ANNEX A. RELATED DOCUMENTS A.1. . . . . . . . . . . . . . . . . . . .
ANNEX B. DEFINITIONS AND ABBREVIATIONS B.1. . . . . . . .
ANNEX C. WELD METAL MECHANICAL PROPERTIESAND TEST PANEL REQUIREMENTS C.1. . . . . . . . .
ANNEX D. MOD(PE) SSC APPROVED WELDINGCONSUMABLES D.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANNEX E. PROCUREMENT CHECK LIST E.1. . . . . . . . . . . . . . .
ALPHABETICAL INDEX
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NES 769Issue 4 (Reformatted)
1.1
1. GENERAL INFORMATION
1.1 Batch Testing
a. The consumables approved for use on submarine steels will be subject to batchtesting. (See Section 6.)
b. Consumables intended to be used for welding other MOD(PE) SSC structuralsteels to submarine steels will be subject to evaluation by DRA Dunfermline(Marine Division), but will be exempt from batch testing.
1.2 Other Consumables
a. The production use of other processes or consumables not contained within thisNES are to be subject to agreement between the fabrication and DNA(SM)NA 115.
1.3 DRA Dunfermline (Marine Division)
a. The tests carried out by DRA will be in conjunction with the weldingconsumable manufacturer and/or the fabricator.
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1.2
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NES 769Issue 4 (Reformatted)
2.1
2. APPROVAL SYSTEM
a. The approval system is to comprise two parts:
(1) Electrode manufacturers approval.
(2) Fabricators approval.
2.1 Electrode Manufacturers Approval
2.1.1 General
a. Compliance with the requirements contained in this NES will qualify thewelding consumable or combination of consumables for inclusion in theMOD(PE) SSC approved list, contained in Annex D.
b. Prior approval of the Procurement Executive, Ministry of Defence, DNA(SM)NA 115 is to be obtained in writing before supplying any consumablesmanufactured outside the UK. Where such approval is given consumables maybe subject to batch test control.
c. The requirements defined in Clauses 2.2a. to 2.10d. inclusive are to be met forall processes. For the purpose of these clauses the word consumables is used todescribe:
(1) Manual metal arc electrodes.
(2) Submerged arc wires and fluxes.
(3) Metal arc inert gas wires and gases or gas mixtures.
2.2 Initial Tests
a. These comprise the initial test to which each consumable is to be subjected. Itis implicit in the electrode manufacturers certification (see Clause 3.1a., 4.1a.and 5.1a.) that those DNA(SM) approved consumables in current productionare capable of satisfying the whole of these test requirements.
2.3 Production Control
a. BS 639 is to apply.
b. Each electrode manufacturer is to report to DNA(SM) NA 115, Foxhill, Bath,the details of the normal quality control system used at each manufacturingestablishment where consumables submitted for approval are made.
2.4 Periodic Check Tests
a. These consist of a selection of specified tests which are to be repeated at12 monthly intervals to provide evidence that the consumables currentlyproduced continue to possess the properties recorded in the initial tests. Withintwo months of the test panels being welded, the test results are to be submittedto DNA(SM) NA 115, Foxhill, Bath, through the Quality Assurancerepresentative. Approval will be deleted for any consumable which is not testedand reported on for any period exceeding 12 months.
b. Consumables may be upgraded by virtue of the results of periodic check testsand such additional tests as DNA(SM) may consider necessary.
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2.2
2.5 Re-tests
a. When any test specimen fails to satisfy the test requirements, twice the numberof specimens specified for the initial periodic check, or batch tests, are to beprepared using consumables from the same batches under the originalconditions and shall be submitted to the test in which failure occurred. Whereit is necessary to change the welding conditions to attain the requiredmechanical properties then a complete set of tests at the new conditions shallbe done. Provided that all the tests of the additional specimens are satisfactorythe combinations will be accepted as having passed the tests.
2.6 Test Panels
a. The preparation of test panels and test methods follow the statedBS requirements, the base materials and acceptance/rejection criteria shall,however, be in accordance with Annex C.
2.7 Mechanical Properties
a. Weld Metal Mechanical Properties. The required weld metal mechanicalproperties for each MOD(PE) structural steel are defined in Annex C.
b. Where the stipulated properties are achieved for a particular material and theother requirements of this NES are met, approval may be noted accordingly.Where the properties for B quality steel are achieved then approval will alsobe noted formild steel. In the case ofmanual metal arc electrodes approval 4mmand above will qualify smaller sizes for the same approval.
2.8 Chemical Analysis
a. Where required within this NES chemical analysis shall be done. The samplefor analysis shall be obtained by drilling, machining ormilling in such amannerthat nometal is removed from within 6.5mm of the basematerial. Any standardanalysing procedure may be used, but the method used shall be stated in thereport.
b. The percentage contents of the elements shown in TABLE 2.1 is to be reportedunless otherwise agreed between DNA(SM) and the electrode manufacturer.
Material Elements
Mild Steel C. Mn. Si. P. S.
B quality up to12mm
C. Mn. Si. Cr. Ni. Mo. P. S.
B quality over12mm
C. Mn. Si. Cr. Ni. Mo. P. S.
UXW, QT28, QT35,QIN and HY80
C. Mn. Si. Ni. Mo. V. S. P. Cu. Cr.
TABLE 2.1
c. The sulphur and phosphorus content is not to exceed 0.05% each, except forthose consumables approved for QT35, QIN or HY80 where the sulphur andphosphorus content shall not exceed 0.03% each.
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NES 769Issue 4 (Reformatted)
2.3
2.9 Welding Control Parameters (Welding Conditions Used in Tests)
a. Full details of the welding conditions used during production of all test piecesis to be forwarded to DNA(SM) NA 115, Foxhill, Bath, with the test results.TABLE 2.2, TABLE 2.3 and TABLE 2.4 show the requirements in tabulatedform. Where possible, electrode manufacturers are requested to follow theformat in reporting the welding conditions and extent of testing for the variousapproval groups. This information is to include:
(1) Process.
(2) Number of weld passes used to complete each joint.
(3) Size or diameter of electrode or wire.
(4) Type of gas or flux. (As required depending on process.)
(5) The nominal heat input for each weld pass is to be defined as:
AMPS (ARC) VOLTS 103SPEED OF TRAVEL (mmSec)
and expressed as kilojoules per millimetre (kJ/mm.)
(6) Nozzle from weld distance. (As required depending on process.)
(7) Method and degree of weaving used.
(8) Wire stick out. (As required depending on process.)
(9) Mode of metal transfer eg spray, dip or pulsed. (As required depending onprocess.)
(10) Preheat temperature.
(11) Interpass temperature.
(12) The electrode manufacturer shall also provide the following informationregarding test plates:
(a) Identification No
(b) Material
(c) Thickness
(d) Dimensional compliance with the relevant BS for edge preparation.Where such dimensions are at variance with the relevant BS thenthe actual dimensions shall be shown.
b. Approval of the consumable will normally be limited, at the discretion ofDNA(SM), NA 115, to use up to the maximum heat input equal to that usedduring tests. Where the welding conditions are considered unsuitable forproduction conditions, approval of the consumables will not normally begranted.
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2.10 Fabricators Approval
a. Prior to the use of welding in production, fabricators are to meet the followingrequirements:
(1) Consumables are to be selected from the list in Annex D. and used strictlyin accordance with the approvals of that list.
(2) A satisfactory pre-production procedure test is to be completed inaccordance with NES 770 or NES 706.
(a) Test plates of butt welds are to be radiographed and are to meet theappropriate standards of NES 773.
(b) Test plates of both fillet welds and butt welds are to be visuallyexamined for weld shape and soundness andmeet the requirementsof NES 773.
(3) The welding procedure is to be agreed by the MOD Quality AssuranceRepresentative before production work is commenced.
b. The production use of consumables not listed in Annex D. or the use ofconsumables outside the conditions listed in Annex D. are to be subject toindividual approval between the fabricator and DNA(SM), NA 115.
c. Fabricators experienced in MOD(PE) SSC work may offer this experience asproof that they have established satisfactory welding procedures and that thetesting required by Clause 2.10a. need not be carried out. The acceptance ofsuch evidence will rest with the MOD Quality Assurance Representative. Nostructural welding is to be undertaken without awritten procedure based on theactual consumables selected for use.
d. When approval is sought to use a combination of consumables such as flux andwire for submerged arc welding whereby the flux and wire are produced bydifferent manufacturers, then the fabricator is responsible for the initialapproval tests and batch control tests.
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2.5
see Annex C., Note d.(2)
TABLE 2.2 WELDING CONSUMABLE APPROVAL DATAMANUAL METAL ARC ELECTRODES
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2.6
TABLE 2.3 WELDING CONSUMABLE APPROVAL DATASUBMERGED ARC
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2.7
*= see Annex C., Note d.(2)TABLE 2.4 WELDING CONSUMABLE APPROVAL DATA
METAL INERT GAS
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3.1
3. MANUAL METAL ARC ELECTRODESELECTRODE MANUFACTURERSAPPROVAL
3.1 Product Control Requirements
a. The following requirements of BS 639 are to apply:
(1) Classification.
(2) Size of electrode.
(3) Tolerance on dia of core wire.
(4) Covering.
(5) Packing and storage, except where specific arrangements have beenmadebetween electrode manufacturer and DNA(SM). These are shown inAnnex D.
(6) Marking.
(7) Manufacturers certificate; in addition the DNA(SM) approval is to bestated as shown in Annex D.
3.2 Test Requirements for all Classes of MMA Electrodes including HydrogenControlled Electrodes
a. Initial Approval. The following tests are to be carried out by the electrodemanufacturer to determine the weld metal properties. The welding parametersand conditions for consumables being submitted for approval in respect of QINtype steels are to be in accordance with NES 770.
(1) All-Weld Tensile Tests. Two all-weld tensile test specimens, one using4mm and one using 8mm or the largest electrode submitted for approvalare to be prepared and tested in accordance with BS 639, Appendix D1and D2.
(2) All-Weld Impact Test. Six Charpy V-notch impact test specimens, threeusing 4mm and three using 8mm or the largest size electrode submittedfor approval are to be prepared and tested in accordance with BS 639,Appendix D1 and D3.
(3) Chemical Analysis. Is to be taken from one of the all-weld metalspecimens prepared for the above tests.
(4) Transverse Bend Tests. Two bend tests, one with the face and the otherwith the root in tension shall be carried out for each welding position forwhich the electrode is classified by the electrode manufacturer. Themethod of preparation of the test pieces and test specimens and methodsof carrying out the tests are to be as defined in BS 639, Appendix E1 andE2 (see also Clause 2.6a.)
b. Periodic Check Tests. The following tests are to be done by the electrodemanufacturer to meet the requirements of Clause 2.4a. The welding conditionsshall be similar in all respects to those used for the initial approval tests, theseare to be fully reported with the results.
(1) All-weld tensile tests. In accordance with Clause 3.2a.(1)
(2) All-weld impact tests. In accordance with Clause 3.2a.(2)
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NES 769Issue 4 (Reformatted)
3.2
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4.1
4. SUBMERGED ARC WELDING CONSUMABLESELECTRODEMANUFACTURERS APPROVAL
4.1 Product Control Requirements
a. The following requirements of BS 4165 are to apply:
(1) Definitions.
(2) Size of wire.
(3) Tolerance on diameter of wire (for bare wire only).
(4) Conditions of wire.
(5) Finish.
(6) Copper coating.
(7) Tensile strength.
(8) Coils.
(9) Coiling conditions.
(10) Flux, except that the mechanical properties of the welds are to be equatedto the requirements of this Standard.
(11) Packaging and storage, except where specific arrangements have beenmade between electrode manufacturer and DNA(SM) NA 115. These areshown in Annex D. hereof.
(12) Wire.
(13) Flux.
(14) Special conditions.
(15) Marking.
(16) Wire.
(17) Flux.
(18) Manufacturers certificate; in addition the DNA(SM) NA 115 approval isto be stated as shown in Annex D. hereof.
4.2 Test Requirements for Submerged Arc Wire and Flux Combinations
a. The wire and flux combination for which approval is required will for thepurpose of Clauses 4.3a. to 4.4c. be termed the consumables. The weldingparameters and conditions for combinations being submitted for approval inrespect of QIN type steels are to be in accordance with NES 770.
4.3 Initial Approval
a. The following tests are to be carried out by the electrode manufacturer todetermine the weld metal properties. Where approval is required for aparticular flux in combination with more than one flux, separate tests are to becarried out for each combination.
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NES 769Issue 4 (Reformatted)
4.2
4.4 Multi-Run Technique All-Weld Metal
a. All-weld tensile tests. Two all-weld tensile test specimens, one using thesmallest and one using the largest wire submitted for approval, are to beprepared and tested in accordance with BS 4165 Appendix C1 and C2.
b. All-weld impact test. Six Charpy V-notch impact test specimens, three usingthe smallest and three using the largest size wire submitted for approval, areto be prepared and tested in accordance with BS 4165 Appendix C1 and C3.
c. Chemical analysis. Is to be taken from one of the all-weld metal specimensprepared for the above tests.
4.5 Multi-Run Technique V-Butt Test
a. Transverse bend tests. Four transverse bend test specimens, two using thesmallest and two using the largest size wire submitted for approval, are to betested. The method of preparation of the test pieces and test specimens andmethods of carrying out the tests are to be as defined in BS 4165 Appendix D1and D3 (see also Clause 2.6a.).
4.6 Square Edge Two Run Technique
a. Square edge butt weld test.Where approval is required for two run squareedge preparation the following tests, in addition to those contained in Clauses4.3a. to 4.5a., arc to be carried out. The object of these tests is to establish themaximum material thickness that can be welded with the two run SQUAREEDGE technique and still attain the required mechanical properties.
b. Square edge butt weld tests are to be prepared and tested in accordance withBS 4165 Appendix E1, E3, E4 and E5 only, subject to the exceptions statedbelow:
(1) BS 4165 Appendix E1. Methods of preparing test pieces and testspecimen. The material used for the test panels are to be in accordancewith Clause 2.6a. The MATERIAL THICKNESS is to be determined bythe electrode manufacturer as being the maximum thickness suitable forthe technique for the particular wire size involved. The longitudinal weldtensile test is not required.
(2) BS 4165 Appendix E3. Impact tests. Six Charpy V-notch impactspecimens are to be tested, three using 3.2mm or less diameter wire andthree using the largest size of wire submitted for approval. Where thethickness of the base material is less than that necessary for thepreparation of standard size Charpy specimens then, assuming all otherrelevant requirements of this specification are met:
(a) the consumable may be approved for multi-run welding only, or
(b) square edge two run approval may be given but a maximumthickness limit will be imposed.
(3) The alternatives (a) or (b)will be at the discretion of DNA(SM) and will bebased on the results of the other tests contained in Clauses 4.3a. to 4.6c.
(4) BS 4165 Appendix E5. Transverse bend tests. Four test specimens areto be bent through an angle of 180 . Two using 3.2mm or less diameterwire and two using the largest size of wire submitted for approval.
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NES 769Issue 4 (Reformatted)
4.3
c. The test plates prepared for the tests contained in Clause 4.6a. are to beradiographed and subject tomacro-examination to ensure weld soundness, beadalignment and full penetration.
4.7 Periodic Check Tests
a. The following tests are to be carried out by the electrode manufacturer to meetthe requirements of Clause 2.4a. The welding conditions are to be similar in allrespects to those used for the initial approval tests and are to be fully reportedwith the results.
(1) All-weld tensile tests. Two all-weld tensile test specimens are to beprepared and tested in accordance with Clause 4.4a.
(2) All-weld impact tests. Six Charpy V-notch test specimens are to beprepared and tested in accordance with Clause 4.4b.
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NES 769Issue 4 (Reformatted)
4.4
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NES 769Issue 4 (Reformatted)
5.1
5. MIG WELDING CONSUMABLESELECTRODE MANUFACTURERSAPPROVAL
5.1 Product Control Requirements
a. The following requirements of BS 2901 Part 1, are to apply:
(1) Diameters and tolerances.
(2) Condition of rods and wires.
(3) Reels of wire.
(4) Reeling conditions.
(5) Packing, except where specific arrangements have been made betweenelectrode manufacturer and DNA(SM). These will be shown in Annex D.hereof.
(6) Marking.
(7) Suppliers certificate; in addition the DNA(SM) approval is to be stated asshown in Annex D. hereof.
5.2 Test Requirements for MIG Wire/Gas Combinations
a. The physical test requirements of this section are referenced to:
BS 4165Submerged arc welding
BS 639Covered electrodes for manual metal arc welding.
b. Where approval is required for a wire in combination with a particular gas orgas mixture or more than one gas or gas mixture, then separate tests are to becarried out for each combination. Separate tests are to be carried out for eachwire submitted for approval and where specified herein for each mode of metaltransfer, eg spray, dip or pulsed.
5.3 Initial Approval
a. The following tests are to be done by the electrode manufacturer to determinethe weld metal properties, the welding parameters and conditions forcombinations being submitted for approval in respect of QIN type steels are tobe in accordance with NES 770.
5.4 Multi-Run Technique All-Weld Metal
a. All-weld tensile test. One all-weld tensile test specimen, using the largest ofthe wire sizes submitted for approval, are to be prepared and tested inaccordance with BS 639 Appendix D1 and D2.
b. All-weld impact test. Three Charpy V-notch impact test specimens, using thelargest size wire submitted for approval, are to be prepared and tested inaccordance with BS 639 Appendix D1 and D3.
c. Chemical analysis. Is to be taken from one of the all-weld metal specimensprepared for the above tests.
5.5 Multi-Run Technique V-Butt Test
a. The physical preparation of the test pieces, from which the test specimensrequired by the tests in Clauses 5.5d. and 5.5e. are made, are to follow therequirements of BS 639 Appendix D except that the weld panels are to beincreased in length sufficiently to enable production of three Charpy V-notchspecimens (see also Clause 0311).
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NES 769Issue 4 (Reformatted)
5.2
b. The smallest and largest size wire submitted for approval are to be combinedin the joint, at the root and outer layers respectively. A sealing run is to beapplied with the largest wire used and welded in the same position as the mainweld after back gouging the main weld to clean sound material.
c. Where approval is required for positional deposition which requires theadoption of dip transfer, then separate test panels are to be produced for eachposition for which approval is sought.
d. Transverse bend tests. Two bend tests, one with the face and one with theroot in tension, are to be taken from each panel. The tests are to be conductedin accordance with BS 639 Appendix E1 and E2 (see also Clause 2.6a.).
e. Impact tests. Three Charpy V-notch specimens are to be taken from eachpanel. The test specimens are to be cut with the longitudinal axes transverse tothe weld axis and is to be located within 1.6mm below the surface of the mainweld. The notch is to be positioned in the centre of the weld and is to be cut inthat face of the test specimen which is perpendicular to the surface of the plate.The specimen is then to be tested in accordance with BS EN100451.
5.6 Square Edge Two Run Technique
a. Square edge butt weld tests. Where approval is required for two run squareedge preparation the following tests, in addition to those contained in Clauses0605 to 5.5e., is to be carried out. The object of these tests is to establish themaximum material thickness that can be welded with the two run square edgetechnique, and still attain the required mechanical properties.
b. Square edge butt weld tests are to be prepared and tested in accordance withBS 4165 Appendix E1, E3, E4 and E5 only, subject to the following exceptions:
(1) BS 4165 Appendix E1. Methods of preparing test pieces and testspecimens. The material used for the test panels is to be in accordancewith Clause 2.6a. The MATERIAL THICKNESS is to be determined bythe electrode manufacturer as being the maximum thickness suitable forthe technique for the particular wire/gas combination involved. Separatetests are to be carried out for each size of wire for which approval isrequired. The longitudinal weld tensile test is not required.
(2) BS 4165 Appendix E3. Impact tests. Three Charpy V-notch specimensare to be tested for the largest size of wire for which approval is required.Where the thickness of the basematerial is less than thatnecessary for thepreparation of standard size Charpy specimen then, assuming all otherrelevant requirements of this specification are met:
(a) the wire/gas combination may be approved for multi-run weldingonly, or
(b) square edge two run approval may be given but a maximumthickness limit will be imposed.
The alternatives (a) or (b) will be at the discretion of DNA(SM) andwill be basedon the results of the other tests contained in Clauses 0604 to 0615.
(3) BS 4165 Appendix E5. Transverse bend tests. Two tests are to be donefor the largest size of wire submitted for approval. The specimens are tobe bent through 180 .
c. The test plates prepared for the tests contained in Clause 5.6b. are to beradiographed and subjected to macro-examination to ensure weld soundness,bead alignment and full penetration.
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NES 769Issue 4 (Reformatted)
5.3
5.7 Periodic Check Tests
a. The following tests are to be carried out by the electrode manufacturer to meetthe requirements of Clause 2.4a. The welding conditions must be similar in allrespects to those used for the initial approval tests, these are to be fully reportedwith the results.
(1) All-weld tensile tests. One all-weld tensile test specimen is to beprepared and tested in accordance with Clause 5.4a.
(2) All-weld impact tests. Three Charpy V-notch test specimens are to beprepared and tested in accordance with Clause 5.4b.
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NES 769Issue 4 (Reformatted)
5.4
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NES 769Issue 4 (Reformatted)
6.1
6. CONSUMABLES FOR WELDING SUBMARINE STEELS
a. Electrode manufacturers seeking approval for consumables in respect ofsubmarine steels as defined in SCOPE 2. will, in addition to completing theelectrode manufacturers tests as detailed in this NES, will be requested toprovide the following information:
(1) A certificate for MMA consumables stating the moisture content thatrelates to 5ml of diffusible hydrogen per 100 grammes of deposited weldmetal.
(2) Baking and holding conditions for MMA consumables to achieve 5ml ofdiffusible hydrogen per 100 grammes of deposited weld metal.
(3) A diffusible hydrogen/time graph that will show the diffusible hydrogenper 100 grammes of deposited weld metal. The weld metal is to bedeposited at 1 hourly intervals over a period of five hours. Theconsumables are to have been baked in accordance with themanufacturers recommendations to achieve (1) above and removed fromholding ovens prior to commencement of welding.
Manufacturers may be requested by DNA(SM) to supply quantities ofconsumables or combinations of consumables to DRA Dunfermline. Theconsumables supplied will be subjected to special valuation and tests. In allthese tests the minimum and maximum values of heat input and interpasstemperatures will be used as appropriate to the steel and the weldingconsumables to determine the optimum parameters within which theconsumables may be used. To obtain approval the test results are to meet therequirements given in Annex C. and satisfy the special evaluation and testsdetailed in Clause 6.b.
b. Special Evaluation and Tests:
NOTE: Test panel material is to be the same as that to be used in production.
TEST 1 Usability and all positional weld metal properties.
Before proceeding with full assessment tests of a consumable, initial testsare to be carried out by using scrap material to determine the usability ofthe consumable in all positions, followed by welded panels in 38mm thickplate of the relevant steel, with double vee preparation and a minimumlength of 305mm.
Charpy and Hounsfield tensile specimens will be taken from the panels.Two panels are to be welded in each of the following positions, one withminimum heat input and one with maximum heat input to determineoptimum heat input.
c. Flat.
d. Inclined overhead 45 .
If test results coincide with manufacturers claims, Tests 2 to 9 will becarried out.
TEST 2 Moisture content of coating for each gauge of MMA electrode and forsubmerged arc flux is to be determined in the following conditions:
e. As received.
f. After baking for 2 hours at 400 C to 475 C.
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NES 769Issue 4 (Reformatted)
6.2
TEST 3 Naval Research Laboratory (NRL) weld root run cracking test.Cracking/no cracking temperatures to be established in 38mm NRLspecimens of the relevant steel.
TEST 4 Mechanical properties. Weld two panels in the following positions:vertical, overhead, and inclined overhead 45 . Size of test panels to be38mm thick, 455mm 230mm with double vee preparation. Flush weldsand from each panel take:
g. Four Hounsfield specimens.
h. Two sets of three Charpy specimens.
i. Three side bend specimens.
TEST 5 Allweldmetal properties. Weld twopanels in25mm thick plate with singlevee preparation and backing bar for Charpy specimens and two BS 18gauge length tensiles.
j. As welded.
k. Stress relieved.
TEST 6 Weld pad analysis. Weld deposit 16mm square 50mm long to be madeon a mild steel base (75mm 50mm 6mm). Sample for analysis is tobe taken so that no metal is removed from within 7mm of bottom of pad.
TEST 7 Crack starter bulge explosion panels. Weld three panels, two in the flatand one in the inclined overhead position, in 38mm thick plate,915mm 610mm, with double vee preparation. Flush welds and fromeach panel take:
l. Crack starter bulge explosion specimen.
m. Four Hounsfield specimens.
n. Two sets of three Charpy specimens.
o. Three side bend specimens.
TEST 8 Plain bulge explosion panels. Weld three panels, two in the flat and onein the inclined overhead positions, in 38mm thick plate,915mm 610mm, with double vee preparation. Flush welds and fromeach panel take:
p. Plain bulge specimen.
q. Four Hounsfield specimens.
r. Two sets of three Charpy specimens.
s. Three side bend specimens.
TEST 9 Dropweight nil ductility transition (NDT) temperature.
Weld one panel in 38mm thick plate, 915mm 610mm with double veepreparation, in flat position. Flush weld and from the panel take:
t. Six dropweight specimens.
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NES 769Issue 4 (Reformatted)
6.3
u. Four Hounsfield specimens.
v. Two sets of three Charpy specimens.
w. Three side bend specimens.
x. In each of the above tests each panel will be welded by a different welder exceptin Test 5 where the all-weld metal (AWM) specimens will be welded by the samewelder.
y. For assessing wire consumables the above tests will be carried out using sprayand pulsed arc MIG. In the submerged arc process positional welds are notinvolved and only those tests involving welding in the flat position will becarried out.
z. All side bend specimens will be bent through an angle of 180 over a former fourtimes the thickness of the specimen.
aa. Crack starter bulge explosion panels are to be given two shots and the plainbulge explosion panels are to be given sufficient shots to reach the bulge limitwith sufficient reduction of thickness.
6.1 Batch Control
a. Consumables approved for use on the submarine steels defined inSCOPE 2., areto be subject to batch control tests which is to be carried out on each batchwhichforms part of the whole of a consignment of consumables. The results of thesetests are to be supplied by the electrode manufacturer or fabricator (see Clause2.10d.) to the consignee and DNA(SM) NA 115, Foxhill, Bath, prior to deliveryof the consignment.
6.2 Patch Definitions
a. For the purpose of Clause 6.1a. the following definitions define a batch ofconsumables:
(1) Manual metal arc electrodes. A batch is to consist of that finishedquantity of electrodes of the same size, made from the same dry mixcoating constituents and core wire, produced in a continuous productionoperation. A change in any of these variables will constitute a change inbatch.
(2) Submerged arc consumables:
(a) Flux. A batch is to consist of that finished quantity of flux of thesame type, made from the same dry mix, produced in a continuousproduction operation. A change in any of these variables willconstitute a change in batch.
(b) Solid bare wire. A batch is to consist of that finished quantity ofwire of the same type, same size and made from the same cast,produced in a continuous production operation. A change in any ofthese variables will constitute a change in batch.
(c) Cored or coated electrode. A batch is to consist of that finishedquantity of electrode of the same type, same size andmade from thesame cast (for core wire, fabricated strip tube or ancillary wires)produced in a continuous production operation with flux or coatingwhich is used from the same dry mix. A change in any of thesevariables will constitute a change in batch.
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NES 769Issue 4 (Reformatted)
6.4
(3) MIG wires:
(a) Solid bare wire. A batch is to consist of that finished quantity ofwire of the same type, same size and made from the same cast,produced in a continuous production operation. A change in any ofthese variables will constitute a change in batch.
(b) Cored or coated electrode. A batch is to consist of that finishedquantity of electrode of the same type, same size andmade from thesame cast (for core wire, fabricated strip tube or ancillary wires)produced in a continuous production operation with flux or coatingwill constitute a change in batch.
b. Each batch is to be identified by a separate batch number.
6.3 Batch Control Tests
a. Manual Metal Arc Consumables. The following tests are to be carried outfor consumables for use on the submarine steels defined in SCOPE 2.
(1) All-weld tensile tests. One all-weld tensile test is to be prepared andtested in accordance with Clause 3.2a., except that separate tests are tobe carried out for each size of electrode.
(2) All-weld impact tests. Three Charpy V-notch impact test specimens areto be prepared and tested in accordance with Clause 3.2a., except thatseparate tests are to be carried out for each size of electrode.
(3) Chemical analysis. Is to be taken from one of the all-weld metalspecimens prepared for the above tests.
b. Submerged Arc Consumables. The following tests are to be carried out forwires and flux combinations for use on the submarine steels defined inSCOPE 2.
(1) All-weld tensile tests. One all-weld tensile test is to be prepared andtested in accordance with Clause 4.4a., except that separate tests are tobe carried out for each size of wire.
(2) All-weld impact test. Three Charpy V-notch impact test specimens areto be prepared and tested in accordance with Clause 4.4b., except thatseparate tests are to be carried out for each size of wire.
(3) Chemical analysis. Is to be taken from the all-weld metal specimenprepared for the above tests.
c. Metal Inert Gas Consumables. The following tests are to be carried out forwire/gas combinations for use on the submarine steels defined in SCOPE 2.
(1) All-weld tensile tests. One all-weld tensile test is to be prepared andtested in accordance with Clause 5.4a., except that separate tests are tobe carried out for each size of wire.
(2) All-weld impact tests. Three Charpy V-notch impact test specimens areto be prepared and tested in accordance with Clause 5.4b., except thatseparate tests are to be carried out for each size of wire.
(3) Chemical analysis. Is to be taken from all-weld metal specimensprepared for the above tests.
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NES 769Issue 4 (Reformatted)
A.1 ANNEX A.
ANNEX A.
RELATED DOCUMENTS
A.1 The following documents are referred to in this NES:
See Clause
BS EN 100021 Methods for tensile testing of materials 6.b.
BS EN 100451 Part 2: Charpy V-notch impact test onmetals
5.5e.
BS 639 Specification for covered carbonmanganese steel electrodes for manualmetal arc welding
2.2a., 3.1a.,3.2a., 5.2a.,5.4a., 5.4b.,5.5a., 5.5d.Annex C.
BS 2901 Part 1: Filler rods and wires for gasshielded arc weldingFerritic Steels
5.1a.
BS 4165 Specification for electrode wires andfluxes for the submerged arc welding ofcarbon steel and medium tensile steel
4.1a., 4.4a.,4.4b., 4.5a.,4.6b., 5.2a.,5.4c., 5.6b.
NES 706 Welding and fabrication of ship structure 2.10a.
NES 770 Welding and fabrication QIN HY80, andQT35 steelsPart 1: GeneralPart 2: Approval of Welding Proceduresfor Submarine Construction
2.10a., 3.2a.,4.2a., 5.3a.,Annex C.,Annex D.,List 1, Sheet 6,List 2, Sheet 4,List 4, Sheet 4,List 6, Sheet 1
*NES 773(DG Ships/G/10000)
Minimum acceptance standards forwelded joints in HM Ships andSubmarines
2.10a.
DG Ships 8081 Carbon steel castings Annex D.,List 1, Sheet 3
ADSPEC 1100 General Carbon Steel Forgings Annex D.,List 1, Sheet 3,4, 6 and 7
* Not yet published
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NES 769Issue 4 (Reformatted)
A.2ANNEX A.
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NES 769Issue 4 (Reformatted)
B.1 ANNEX B.
ANNEX B.
DEFINITIONS AND ABBREVIATIONS
B.1 There are no Definitions and Abbreviations for this NES.
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NES 769Issue 4 (Reformatted)
B.2ANNEX B.
-
NES769
Issue4(Reform
atted)
C.1
ANNEXC.
ANNEXC.
WELDMETALMECHANICALPROPERTIESANDTEST
PANELREQUIREMENTS
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NES 769Issue 4 (Reformatted)
C.2ANNEX C.
NOTES TO ANNEX C.
Note a. Tensile Testing Acceptance/Rejection
The average of the yield strength values of the multi-run welds and theyield strength value of the all weld metal specimen are to be within therange specified in Annex C.
Note b. Charpy Testing Acceptance/Rejection
If the average of the three impact values for either or both sets ofspecimens fails to comply with the specified minimum requirement, threeadditional specimens from each set may be prepared and tested. Theresults may be added to those previously obtained to form a new averagewhich is to comply with the minimum value specified in table or the testwill be deemed a failure.
Note c. BEND TESTING ACCEPTANCE/REJECTION
(1) Manual metal arc welds. The test specimen is to be bent through anangle of 180 over a former having a diameter equal to three times thethickness of the specimen for mild steel approval and four times thethickness of the specimen for higher strength approval.
(2) MIG and submerged act welds. The test specimens are to be bentthrough an angle of 120 over a former having a diameter equal to threetimes the thickness of the specimen for mild steel approval and four timesthe thickness for higher strength approvals. For QIN steels the specimensare to be bent through an angle of 180 .
(3) The consumables comply with the test if, on completion no crack or defecton the outer surface of the specimen is greater than 3mmmeasured acrossthe test specimen of 1.6mm measured along the length of the testspecimen. Premature failure at corners of the test specimen will not because for rejection.
Note d. V BUTT MULTI-RUN PANELS POSITIONS
(1) Panels are to be welded for each welding position for which theconsumable is classified by the electrode manufacturer except that whenthe electrode is classified for welding in the flat position only, two arerequired, and that when the consumable is classified forhorizontal-vertical and vertical positions, a test in the horizontal-verticalposition will not be required. (See BS 639, Appendix E, Table 6 for MMA).
(2) The test panel for the vertical position is to be welded using the upwardmethod unless the manufacturer specifically recommends that only thedownward method is to be used. If both methods are recommended, testpanels welded by each method are to be used.
Note e. QIN and HY80 Acceptance
The properties quoted are for consumables approved for QIN and HY80welds in submarines refits excluding TSSBN, SSK and SSN17 onwards.For all QIN andHY80welds in new construction welds category 1, 2, 3 and4 (NES 770) and in submarine refits other than above the followingminimum properties are required: Yield 550N/mm2with 20% elongationand Charpy values of 50 joules at 50 .
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NES 769Issue 4 (Reformatted)
D.1 ANNEX D.
ANNEX D.
MOD(PE) SSC APPROVED WELDING CONSUMABLES
D.1 This Annex lists the welding consumables currently approved for use withMOD(PE)structural steels.
D.2 Selection ofwelding consumables for use on forgings, castings, and the obsolete steels,which are not shown in this Annex, shall be in accordance with the following exceptthat the welding of S, SU, D, D1 and DW quality steels shall be limited to the manualmetal arc welding process.
APPROVAL GROUPS AS SHOWN IN ANNEX D.
MS up to25mm
B and BXquality up to12mm or MSup to 25mm
B and BXquality Over12mm or MSover 25mm
QT28 QIN &HY80
HYDROGEN CONTROLLEDONLY
OBSOLETESTEELS
QT35SSUDWAD & D1
Up to 12mmUp to 12mmUp to 12mmUp to 12mm
Over 12mmOver 12mmOver 12mmOver 12mmUp to 12mm
AnyThick-ness
FORGINGS
ADSPEC 1100Class IClass IIClass III
Class IV
Any thicknessAny thickness
AnyThick-ness
AnyThick-ness
CASTINGS
DG SHIPS 8081Generalpurpose
Any thickness
D.3 For materials not covered by the above, or for dissimilar metal combinations orcladding applications, only those welding consumables contained in approved weldprocedures or other directive or as advised by DNA(SM) are to be used.
D.4 Heat input ranges ormaximum values have been shown for each welding consumable.Welding parameters are to aim at approaching, but not exceeding, the maximumvalues shown.
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NES 769Issue 4 (Reformatted)
D.2ANNEX D.
LIST 1SHEET 1
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARC (MMA)
MATERIAL Mild Steel up to and including 25mm thickness
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
MUREX WELDINGPRODUCTS LTDCeltian 3.25 5.0 FHOVD
ESAB LtdOK Femax 180ROK SilkmatOK VersimatOK Versitrude 46.58
3.253.253.253.25
5.06.06.06.0
FHfFHVOFHVOFHVO Current values to
PHILIPS ELECTRICARC WELDING LTDPhilips 68Philips 48GPhilips C23SPhilips C23X
2.53.253.25
5.06.06.05.0
FVdFHVOFHfFHf
be in accordancewith themanufacturersrecommendations.Electrodes to beused at a naturalburn off rate
ORLIKON LTDFincordFincord MSupercord
1.62.02.0
4.06.05.0
FHfFHVOVD
burn off ratewithout excessiveweaving.
WELDING RODS LTDWRX 60WRX 21WRX 6013
3.253.253.25
6.06.06.0
FHVOFHVOFHVO
FormerleySmoothway
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NES 769Issue 4 (Reformatted)
D.3 ANNEX D.
LIST 1SHEET 2
MOD(PE) APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARC (MMA)
MATERIAL B & BX Quality up to 12mm thickness and MildSteel up to and including 25mm thickness. Obsolete SteelsS SU, DW and A Quality Steels up to 12mm thickness
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
MUREX WELDINGPRODUCTS LTDFerromaxFastex 5Ferrolux 7024VodexVortic MarineZodian MarineSpeedexFerrex Universal
3.253.253.253.253.253.253.253.25
6.06.06.06.06.06.06.06.0
FHVOFHVOFHVOFHVOFHVOFHVOFHFHVO Current values to
be in accordanceESAB LtdOK Mildtrode 46.00OK Unitrode
3.253.25
6.06.0
FHVOFHVO
be in accordancewith themanufacturersrecommendations.
LINCOLN ELECTRICLTDNormend TV117Vertend
3.253.253.25
6.36.06.0
FHVOFHVOFHVO
recommendations.Electrodes to beused at Heatinput 3.0kJmmmax.
PHILIPSELECTRICAL ARCWELDING LTD45G45G4878
3.253.253.253.25
6.36.36.06.0
FHVOFHVOFHVOFHVO
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NES 769Issue 4 (Reformatted)
D.4ANNEX D.
LIST 1SHEET 2 continued
MOD(PE) APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARC (MMA)
MATERIAL B & BX Quality up to 12mm thickness and MildSteel up to and including 25mm thickness. Obsolete SteelsS SU, DW and A Quality Steels up to 12mm thickness
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
WELDING RODS LTDEasywayFerrod 2Autoferrod 3Ferrod 3WRX 25MWRX 30WRX 40Ferrod 170WRX 50WRX 45WRX 70
3.253.254.003.253.253.253.253.253.253.25
6.06.06.06.06.06.06.06.06.05.0
FHVOFFFHVFHVOFHVOFhfFHVOFHVOVd
Current values tobe in accordancewith themanufacturersrecommendations.Electrodes to beused at a naturalburn-off ratewithout excessiveweaving.
OERLIKONWELDING LTDFabacito 7028
weaving.Heat input not toexceed 3.0kJ/mm.
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NES 769Issue 4 (Reformatted)
D.5 ANNEX D.
LIST 1SHEET 3
MOD(PE) APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARCHydrogen Controlled only.
MATERIAL Forgings to ADSPEC 1100 Classes 1 and 11. GeneralPurpose Castings to DGS 8081.
B and BX Quality over 12mm thickness andMild Steel over 25mm thickness.Obsolete Steels S, SU, DW and Quality over 12mm thickness
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
MUREX WELDINGPRODUCTS LTDCrestexFortex 7018Ferex 7018LTFerex 7016Ferex STF
3.253.253.253.252.5
5.06.06.06.06.0
FVDFVHOFVHOFHVOFHVO
ESAB LTDOK Hytrode 70161OK Unitrode 48.04OK Unitrode 7018LTOK Hytrode 70162
2.52.52.52.5
5.06.06.06.0
FHVOFHfFHVOFHV
Current values tobe in accordancewith themanufacturers
PHILIPSELECTRICAL ARCWELDING LTDPhilips 36GPhilips C16Philips 27Philips 55GPhilips 56S
3.253.253.253.253.25
6.36.05.06.06.0
FHVOFHFVDFHVOFHVO
manufacturer srecommendations.Electrodes to beused at a naturalburn-off ratewithout excessiveweaving.Heat input1.0/2.5kJmm.
WELDING RODS LTDLF 40LOWHYDROD No 2WRX 7016WR LF51
3.253.252.53.25
6.06.06.05.0
FHVOFHVOFHVOFVD
LINCOLN ELECTRICLTDUltraweld 70 2.5 6.0 FHV
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NES 769Issue 4 (Reformatted)
D.6ANNEX D.
LIST 1SHEET 4
MOD(PE) APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARCHydrogen Controlled only. Allelectrodes are to be supplied in sealed (Non Vacuum)containers.
MATERIAL QT 28.Forgings to ADSPEC 1100 Class III
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
MUREX WELDINGPRODUCTS LTDFortex B 3.25 6.0 FHVO
Current values tobe in accordancewith themanufacturersrecommendations.Electrodes to be
Batch testcertificaterequired.Notsuitable toStressRelief
B t h t tESAB LTDTensitrode 55 3.25 6.0 FHVO
Electrodes to beused at a naturalburn-off rate
Batch testcertificaterequiredwithout excessive
weaving.Heat input1.18/2.17kJ/mmmax.
required
-
NES 769Issue 4 (Reformatted)
D.7 ANNEX D.
LIST 1SHEET 5
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARCHydrogen Controlled only.
MATERIAL UXW and Fillet Welds of UXW frames to QT 28 pressurehull
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
MUREX WELDINGPRODUCTS LTDFerex 7018LT 3.25 6.0 FHVO
Current values tobe in accordancewith themanufacturers
Batch testcertificaterequired.manufacturer s
recommendations.Electrodes to beused at a naturalburn-off ratewithout excessiveweaving.Heat input1.18/2.17KJ/mm.
-
NES 769Issue 4 (Reformatted)
D.8ANNEX D.
LIST 1SHEET 6
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARCHydrogen Controlled only. Allelectrodes shall be supplied in sealed (Non Vacuum)containers.
MATERIAL QIN and HY80. Forgings to ADSPEC 1100 Class IVObsolete Steel QT35.
APPROVAL (A) New construction weld categories 1,2,3 and 4 (NES 770)(B) Submarine refits.
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
MUREX WELDINGPRODUCTS LTD
FORTREX NQ1(9016 Type)
3.25 5.0 FHVO 1.8/2.8
3.25mmdiam to beused forroot runsonly. Canbe used oncastingswithPWHT
BABCOCK WELDINGPRODUCTS LTD
Babcock 11018
Babcock 9018 (QIN)
3.25
3.25
5.0
4.0
FV
FHVO
F = 2.5V = 2.13
1.2/2.07
METRODE WELDINGPRODUCTS LTD
3NICR MOB 3.25 5.0 F 1.32.5 For use oncastings,extruded orrolledframesprior toquench andtempercycle iscarried out
LINCOLN WELD ROLTD
Lincoln Weld Ro(9106 Type)
3.25 5.0 FHVO 1.16/2.7
-
NES 769Issue 4 (Reformatted)
D.9 ANNEX D.
LIST 1SHEET 7
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS MANUAL METAL ARCHydrogen Controlled only. Allelectrodes shall be supplied in sealed (Non Vacuum)containers.
MATERIAL QIN and HY80. Forgings to ADSPEC 1100 Class IVObsolete Steel QT35.
APPROVAL Submarine refits ex. TSSBN, SSK, SSN17 onwards
APPROVALS
MANUFACTURER andElectrode Name
Electrodesize(mm)
WeldingPosition
Heat InputkJ/mm
REMARKS
Min MaxPosition kJ/mm
PHILIPSELECTRICAL ARCWELDING LTD
Philips 108 (DutchManufacture)
Philips 118 (DutchManufacture)
3.25
3.25
6.0
6.0
FHVO
FHVO
OERLIKONWELDING LTD
Tenacito 11018M 4.0 FHVO
BABCOCK WELDINGPRODUCTS LTD
Babcock 11018 3.25 5.0 FV F = 2.5V = 2.13
METRODEPRODUCTS LTD
11018M 4.0 5.0 FHVO
-
NES 769Issue 4 (Reformatted)
D.10ANNEX D.
LIST 2SHEET 1
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS SUBMERGED ARC
APPROVAL MULTIPASS AND FILLED WELDSLIMIT
MATERIAL MILD STEEL UP TO AND INCLUDING 25mm MAXTHICKNESS
MANUFACTURER andAPPROVALS
MANUFACTURER andWire/Flux Names Wire size Welding Heat Input REMARKSWire/Flux Names Wire size
mmWeldingPosition
Heat InputkJ/mm
MUREX WELDINGPRODUCTS LTD
Bostrand S2/Muraflex A50
Bostrand S4/Muraflux A50Muraflux A80BX 200Satinarc
Bostrand S1/Satinarc BX10
Bostrand S2/Muraflux 1009
2.43.24.05.0
2.43.24.05.0
2.43.24.05.0
5.0
FHfFHfFHfFHf
FHf
FHf
FHf
Current values tobe in accordancewith themanufacturersrecommendations
-
NES 769Issue 4 (Reformatted)
D.11 ANNEX D.
LIST 2SHEET 2
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Submerged arc
MATERIAL Multi-pass and fillet welds
APPROVAL B Quality 12mm thickness max, and Mild Steel up to andincluding 25mm Max thickness, etc
MANUFACTURER andAPPROVALS
MANUFACTURER andWire/Flux Names Wire size Welding Heat Input REMARKSWire/Flux Names Wire size
mmWeldingPosition
Heat InputkJ/mm
MUREX WELDINGPRODUCTS LTD
Bostrand S2/Satinarc BX 200 2.4
3.24.05.0
FHfFHfFHfFHf
Current values tobe in accordancewith themanufacturersrecommendations.Heat Input0.3kJ/mm max.
-
NES 769Issue 4 (Reformatted)
D.12ANNEX D.
LIST 2SHEET 3
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Submerged Arc
APPROVED Multipass and fillet weldsLIMIT
MATERIAL B and BX Quality over 12mm andMild Steel over 25mm
MANUFACTURER andAPPROVALS
MANUFACTURER andWire/Flux Names Wire size Welding Heat Input REMARKSWire/Flux Names Wire size
mmWeldingPosition
Heat InputkJ/mm
MUREX WELDINGPRODUCTS LTD
Bostrand WB3/Satinarc BX 300 3.2
4.0FHf
Bostrand S2/Satinarc BX 200
2.43.24.05.0
FHfFHfFHfFHf
Current values tobe in accordancewith themanufacturersmanufacturersrecommendations.Heat Input1.0/2.5kJ/mm.1.0/2.5kJ/mm.
ES AB LTDOK Autorod 53/OKFlux 10.71OK Autorod 53/OKFlux 10.62OK Autorod S2Si/OKFlux 10.71
2.55.02.5
2.5
FHf
FHf
FHf
-
NES 769Issue 4 (Reformatted)
D.13 ANNEX D.
LIST 2SHEET 4
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS SUBMERGED ARC
APPROVAL QIN and HY80
MATERIAL Multipass and Filled Welds in:(A) New Construction welds categories 1, 2, 3 and 4(NES 770)(B) Submarine refits
MANUFACTURER andAPPROVALS
MANUFACTURER andWire/Flux Name Wire size Welding Heat Input REMARKSWire/Flux Name Wire size
mmWeldingPosition
Heat InputkJ/mm
OERLIKONWELDING LTD
OES3 wireOP121TT flux
4.0 FHf1.2/2.2
-
NES 769Issue 4 (Reformatted)
D.14ANNEX D.
LIST 2SHEET 5
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS SUBMERGED ARC
APPROVAL Multipass and Filled Welds in ex TSSBN, SSK, SSN17LIMIT onwards
MATERIAL QIN and HY80
MANUFACTURER andAPPROVALS
MANUFACTURER andWire/Flux Name Wire size Welding Heat Input REMARKSWire/Flux Name Wire size
mmWeldingPosition
Heat InputkJ/mm
OERLIKONWELDING LTD
OES3 NI MO1Wire OP41 TTFlux
4.0 FHf 1.2/2.2
1. ApprovalcoversGermanproducedwire only2. Currentnot toexceed 500amps
LINDE
Linde M188wire OP41TTflux
1.6 FHf 1.18/2.17
1.Fabricatorto supplybatch testcertificates2.DNA(SM)priorapprovalbeforebeing used.3. Heattreatmentnotpermitted4. Currentnot toexceed 500amps
-
NES 769Issue 4 (Reformatted)
D.15 ANNEX D.
LIST 3SHEET 1
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Submerged arc
APPROVAL Square edge two-run butt weldsLIMIT
MATERIAL B and BX quality and/or Mild Steel to thickness approvedbelow
MANUFACTURER andAPPROVALS
MANUFACTURER andWire/Flux Name Wire size Welding Heat Input REMARKSWire/Flux Name Wire size
mmWeldingPosition
Heat InputkJ/mm
ESAB LTDOK Autorod S3/OKFlux 10.71
2.5 12mm 2.5/3.3 550 Amps31 ArcVolts
MS only
-
NES 769Issue 4 (Reformatted)
D.16ANNEX D.
LIST 4SHEET 1
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Metal Arc inert gas shielded
APPROVAL Multi-pass and fillet weldsLIMIT
MATERIAL Mild Steel up to and including 25mm max
APPROVALSMANUFACTURERand Wire/Flux Name
Wiresize Arc Welding Heat Input
REMARKSand Wire/Flux Name sizemm
ArcMode
WeldingPosition
Heat InputkJ/mm
MUREX WELDINGPRODUCTS LTD
+Bostrand LW1/CO2*
Co-o-Mig 57/Argoshield 5Argoshield 20
Fusarc No 1/CO2*
0.81.01.21.21.6
1.61.62.02.45.0
DipDipSprayDipSpray
SprayDipSpraySprayspray
FHVOFHfFHfHVFHf
FHfHVOFHfFHfFHf
Current values tobe in accordancewith themanufacturersrecommendations
*Argoshield5 orArgoshield20 may beused in lieuof CO2
+ BostrandBW1(Uncoppered)may be usedin lieu0.8 to 1.2sizes only
LINCOLNELECTRIC LTD
C.3/CO2 1.21.21.61.6
SprayDipSprayDip
FHfHVFHfFV
Current values tobe in accordancewith themanufacturersrecommendations
-
NES 769Issue 4 (Reformatted)
D.17 ANNEX D.
LIST 4SHEET 2
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Metal-arc inert gas shielded
APPROVAL Multi-pass and fillet weldsLIMIT
MATERIAL B quality up to 12mm thickness max and Mild Steel up to25mm
MANUFACTURERAPPROVALS
MANUFACTURERand Wire Name/Gas
ShieldWiresize Arc Welding Heat Input kJ/mm
REMARKSShield size
mm
ArcMode
WeldingPosition Heat Input kJ/mm
*Argoshield5 orArgoshield20 may beused in lieuof CO2
JOHN PRING ANDSON LTD
Golring/CO2 1.01.01.21.21.6
SprayDipSprayDipSpray
FHfHVOFHfHVOFHf
Also knownas Migmaster
MUREX WELDINGPRODUCTS LTD
Bostrand LW1/CO2*+
0.81.01.21.21.6
DipDipSprayDipSpray
FHVOFHVOFHVOFHVOFHVO
Current values tobe in accordancewith themanufacturersrecommendations.Heat Input3 0kJ/mm max
+ BW1(Uncoppered)May be usedin lieu0.81.2 sizes
NATIONALSTANDARD COLTDNS118 CopperFree/CO2*
or Argoshield 5
0.80.81.01.01.21.6
SprayDipSprayDipSpraySpray
FHfHVFHfHVFHfFHf
3.0kJ/mm max.
OERLIKONWELDING LTDFluxofil 31/Argoshield 20
1.22.4
SpraySpray
FHfFHf
-
NES 769Issue 4 (Reformatted)
D.18ANNEX D.
LIST 4SHEET 3
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Metal-arc inert gas shielded
APPROVAL Multi-pass and fillet weldsLIMIT
MATERIAL B and BX quality over 12mm and Mild Steel over 25mmthickness
-
NES 769Issue 4 (Reformatted)
D.19 ANNEX D.
MANUFACTURERAPPROVALS
MANUFACTURERand Wire Name/Gas
ShieldWiresize Arc Welding Heat Input kJ/mm
REMARKSShield size
mm
ArcMode
WeldingPosition Heat Input kJ/mm
MUREX WELDINGPRODUCTS LTD
+Bostrand LW1/Argoshield 5
+Bostrand LW1/Argoshield 20
Cor-o-fil B.55/Argoshield 20
Cor-o-fil B.55/CO2*
1.21.6
1.2
1.62.4
1.62.43.2
SpraySpray
Spray
SpraySpray
DipSpraySpray
FHfFHf
FHf
FHfFHf
HVFHfFHf
*Argoshield5 orArgoshield20 may beused in lieuof CO2
+BW1(Uncoppered)May be usedin lieu ofLW1 0.81.2sizes.
ESAB LTD
OK Autorod12.51/CO2*
0.80.81.01.01.21.2
DipSprayDipSprayDipDip
FHVOFHfFHVOFHfFHfFHf
Current values tobe in accordancewith the
GREENGROVEWELDING WIRESLTD
GL14/CO2
0.80.80.90.91.01.01.21.2
DipSprayDipSprayDipSprayDipSpray
FHeVFHfFHfVFHfFHfVFHfFVFH
with themanufacturersrecommendations.Heat Input1.0/2.5kJ/mm
PHILIPSELECTRICAL ARCWELDING LTDPZ 6000/CO2
PZ 6008/CO2
0.80.91.01.01.21.21.61.21.6
DipDipSprayDipSprayDipSpraySpraySpray
HVHVFHfHVFHfHVFHfFHfFHf
LINCOLNELECTRIC LTDC2/CO2*
0.80.81.01.01.21.2
DipSprayDipSprayDipSpray
FHVOFHfFHVOFHfFHfFHf
-
NES 769Issue 4 (Reformatted)
D.20ANNEX D.
LIST 4SHEET 4
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS GAS SHIELDED METAL ARCSOLID WIRES
APPROVAL Mulitpass and fillet welds inLIMIT (A) New construction weld categories 1, 2, 3 and 4
(NES 770) (B) Submarine refits
MATERIAL QIN and HY80
MANUFACTURERAPPROVALS
MANUFACTURERand Wire Name/Gas
ShieldWiresize Arc Welding Heat Input kJ/mm
REMARKSShield size
mm
ArcMode
WeldingPosition Heat Input kJ/mm
LINDE
Linde 95 wire,Argon 95%CO2 gas
1.2 pulsed FHVO 2.9/3.5
-
NES 769Issue 4 (Reformatted)
D.21 ANNEX D.
LIST 4SHEET 5
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS GAS SHIELD METAL ARCSOLID WIRES
APPROVAL Multipass and fillet welds for submarine refits exLIMIT TSSBN, SSK, SSN17 onwards
MATERIAL QIN and HY80
MANUFACTURERAPPROVALS
MANUFACTURERand Wire
Name/Gas shieldWiresize Arc Welding Heat Input
REMARKSName/Gas shield size
mm
ArcMode
WeldingPosition
Heat InputkJ/mm
LINDE
Linde 95 wire,Argon 98%,Oxygen 2% gas
1.2
1.6
Pulsedwithsynergiccontrol
Spray
FHVO
FHf
2.9/3.5
1.18/2.17
Use confinedto GECAWPmachine.
US WELDINGWIRE
ER100S1 wireArgon 98%Oxygen 2% gas
1.2
1.6
Pulsed
Spray
V
F
2.2
2.2
-
NES 769Issue 4 (Reformatted)
D.22ANNEX D.
LIST 5SHEET 1
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Self-ShieldedArc Process
APPROVAL Multi-pass and fillet weldsLIMIT
MATERIAL B quality up to and including 12mm thickness max andMild Steel up to and including 25mm max thickness.
APPROVALSMANUFACTURERand Wire Name
Wiresize Welding Heat Input kJ/mm
REMARKSand Wire Name sizemm
WeldingPosition
Heat Input kJ/mmmax
Current values to bein accordance withthe manufacturersrecommendations.
-
NES 769Issue 4 (Reformatted)
D.23 ANNEX D.
LIST 5SHEET 2
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS Self-ShieldedArc Process
APPROVAL Multi-pass and fillet weldsLIMIT
MATERIAL B and BX quality over 12mm thick and Mild Steel over25mm thick.
APPROVALSMANUFACTURERand Wire Name
Wiresize Welding Heat Input kJ/mm
REMARKSand Wire Name sizemm
WeldingPosition
Heat Input kJ/mmmax
MUREX WELDINGPRODUCTS LTD
Seamac 5.0 FHf 1.0/2.5
Current values to bein accordance withthe manufacturersrecommendations.
-
NES 769Issue 4 (Reformatted)
D.24ANNEX D.
LIST 6SHEET 1
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS GAS SHIELDED METAL ARCCORED WIRE
APPROVAL Multi-pass and fillet welds inLIMIT (A) New Construction weld categories 1, 2, 3 and 4
(NES 770)(B) Submarine refits
MATERIAL QIN and HY80
MANUFACTURERAPPROVALS
MANUFACTURERWire Name/Gas
ShieldWiresize Arc Welding Heat Input
REMARKSShield size
mm
ArcMode
WeldingPosition
Heat InputkJ/mm
ALLOY RODS LTD
Dual Shield II101 TM wire,Argon 95%, CO25% gas (semiautomatic)
Dual Shield II101TM wireArgon 95%, CO25% gas(Mechanized)
1.2
1.2
Spray
Spray
FHVO
FHf
2.0/2.7
3.8/4.5
MUREXWELDINGPRODUCTS LTD
Corofil NQ1wire Argon 95%,CO2 gas
B65 wireArgon 95%, CO25% gas
1.2
1.6
Spray
Spray
FHVO
FHV
-
NES 769Issue 4 (Reformatted)
D.25 ANNEX D.
LIST 6SHEET 2
MOD(PE) SSC APPROVED WELDING CONSUMABLES
PROCESS GAS SHIELDED METAL ARCCORED WIRE
APPROVAL Multipass and fillet welds for submarine refits ex TSSBN,LIMIT SSK SSN17 onwards
MATERIAL QIN and HY80
MANUFACTURERAPPROVALS
MANUFACTURERWire Name/Gas
ShieldWiresize Arc Welding Heat Input
REMARKSShield size
mm
ArcMode
WeldingPosition
Heat InputkJ/mm
ALLOY RODS LTD
Dual Shield II-101 TM wire,Argon95%, CO25% gas electrodepositive)
1.6
1.2
Spray
Spray
F
V
2.2
2.2
-
NES 769Issue 4 (Reformatted)
D.26ANNEX D.
-
NES 769Issue 4 (Reformatted)
E.1 ANNEX E.
ANNEX E.
PROCUREMENT CHECK LIST
STATEMENT OF TECHNICAL REQUIREMENTS TITLE ............................
REFERENCE ............................
Notes:1. This Check List is to ensure that certain aspects of this Naval
Engineering Standard are consulted when preparing a Statement ofTechnical Requirements for a particular application.
2. Clauses where a preference for an option is to be used or where specificdata is to be added are included in the Check Listdata is to be added are included in the Check List.
3. Each item is to be marked either
! = included
NA = not applicable
CHECKNo CHECK
CLAUSENo ! or NA
1 Consumables may be upgraded by virtue ofthe results of periodic check tests and suchadditional tests as DNA(SM) NA 115 mayconsider necessary.
2.4b.
2 Approval of the consumable will normallybe limited at the discretion of ShipDepartment.
2.9b.
3 The production use or use of consumablesoutside the conditions listed in Annex D.shall be subject to individual approvalbetween fabricator and DNA(SM) NA 115.
2.10b.
4 Selection of alternative types of Charpyspecimens, if necessary to be given.
4.6b.
-
NES 769Issue 4 (Reformatted)
E.2ANNEX E.
-
NES 769Issue 4 (Reformatted)
INDEXINDEX.1
ALPHABETICAL INDEX
AAll-weld impact tests, 3.1, 4.3, 5.1, 5.3, 6.4
All-weld tensile tests, 3.1, 4.2, 4.3, 5.1, 5.3, 6.4
BBatch control, 6.3
Batch control tests, 1.1, 6.4
Batch definitions, 6.3, 6.4
CChemical analysis, 2.2, 3.1, 4.2, 5.1, 6.4
DDRA Dunfermline, 1.1
EElectrode manufacturers approval, 2.1
Evaluation, 1.1
FFabricators approval, 2.3, 2.4
HHealth and Safety, vi
IImpact tests, 5.2
Initial approval, 3.1, 4.1, 5.1
Initial tests, 2.1
MMechanical properties, 2.2
MIG wire/gas combinations, test requirements, 5.1, 6.4
MMA electrodes, test requirements, 3.1, 6.4
Multi-run technique all-weld metal, 4.2, 5.1
Multi-run technique V-butt test, 5.1, 5.2
-
NES 769Issue 4 (Reformatted)
INDEX INDEX.2
PPeriodic check tests, 2.1, 3.1, 4.3, 5.3
Product control requirements, 1.1, 3.1
Production control, 1.1, 2.1, 4.1, 5.1
RRe-tests, 2.2
SSpecial evaluation tests, 6.1
Square edge butt tests, 4.2
Square edge two run technique, 4.2, 4.3, 5.2
Submerged arc wire and flux combinationstest requirements, 4.1, 6.4
TTest panels, 2.2
Transverse bend tests, 3.1, 4.2, 5.2
WWeld metal mechanical properties, 2.2
Welding control parameters, 2.3
-
Inside Rear Cover
-
Crown Copyright 2000
Copying Only as Agreed with DStan
Defence Standards are Published by and Obtainable from:
Defence Procurement AgencyAn Executive Agency of The Ministry of Defence
Directorate of StandardizationKentigern House65 Brown Street
GLASGOW G2 8EX
DStan Helpdesk
Tel 0141 224 2531/2 Fax 0141 224 2503
Internet e-mail [email protected]
File Reference
The DStan file reference relating to work on this standard is D/DStan/69/02/769.
Contract Requirements
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Revision of Defence Standards
Defence Standards are revised as necessary by up issue or amendment. It is important thatusers of Defence Standards should ascertain that they are in possession of the latest issue oramendment. Information on all Defence Standards is contained in Def Stan 00-00 Standardsfor Defence Part 3 , Index of Standards for Defence Procurement Section 4 Index of DefenceStandards and Defence Specifications published annually and supplemented regularly byStandards in Defence News (SID News). Any person who, when making use of a DefenceStandard encounters an inaccuracy or ambiguity is requested to notify the Directorate ofStandardization (DStan) without delay in order that the matter may be investigated andappropriate action taken.
CONTENTSTITLE PAGESCOPEFOREWORDSponsorshipConditions of ReleaseGeneralMOD Tender or Contract Process
Related DocumentsHealth and SafetyWarning
1. GENERAL INFORMATION1.1 Batch Testing1.2 Other Consumables1.3 DRA Dunfermline (Marine Division)
2. APPROVAL SYSTEM2.1 Electrode Manufacturers Approval2.1.1 General
2.2 Initial Tests2.3 Production Control2.4 Periodic Check Tests2.5 Re-tests2.6 Test Panels2.7 Mechanical Properties2.8 Chemical AnalysisTABLE 2.12.9 Welding Control Parameters (Welding Conditions Used in Tests)2.10 Fabricators ApprovalTABLE 2.2 WELDING CONSUMABLE APPROVAL DATA MANUAL METAL ARC ELECTRODESTABLE 2.3 WELDING CONSUMABLE APPROVAL DATA SUBMERGED ARCTABLE 2.4 WELDING CONSUMABLE APPROVAL DATA METAL INERT GAS
3. MANUAL METAL ARC ELECTRODESELECTRODE MANUFACTURERS APPROVAL3.1 Product Control Requirements3.2 Test Requirements for all Classes of MMA Electrodes including Hydrogen Controlled Electrodes
4. SUBMERGED ARC WELDING CONSUMABLESELECTRODE MANUFACTURERS APPROVAL4.1 Product Control Requirements4.2 Test Requirements for Submerged Arc Wire and Flux Combinations4.3 Initial Approval4.4 Multi-Run Technique All-Weld Metal4.5 Multi-Run Technique V-Butt Test4.6 Square Edge Two Run Technique4.7 Periodic Check Tests
5. MIG WELDING CONSUMABLESELECTRODE MANUFACTURERS APPROVAL5.1 Product Control Requirements5.2 Test Requirements for MIG Wire/Gas Combinations5.3 Initial Approval5.4 Multi-Run Technique All-Weld Metal5.5 Multi-Run Technique V-Butt Test5.6 Square Edge Two Run Technique5.7 Periodic Check Tests
6. CONSUMABLES FOR WELDING SUBMARINE STEELS6.1 Batch Control6.2 Patch Definitions6.3 Batch Control Tests
ANNEX A. RELATED DOCUMENTSANNEX B. DEFINITIONS AND ABBREVIATIONSANNEX C. WELD METAL MECHANICAL PROPERTIES AND TEST PANEL REQUIREMENTSNOTES TO ANNEX C.
ANNEX D. MOD(PE) SSC APPROVED WELDING CONSUMABLESLIST 1SHEET 1LIST 1SHEET 2LIST 1SHEET 3LIST 1SHEET 4LIST 1SHEET 5LIST 1SHEET 6LIST 1SHEET 7LIST 2SHEET 1LIST 2SHEET 2LIST 2SHEET 3LIST 2SHEET 4LIST 2SHEET 5LIST 3SHEET 1LIST 4SHEET 1LIST 4SHEET 2LIST 4SHEET 3LIST 4SHEET 4LIST 4SHEET 5LIST 5SHEET 1LIST 5SHEET 2LIST 6SHEET 1LIST 6SHEET 2
ANNEX E. PROCUREMENT CHECK LISTALPHABETICAL INDEX