Code  as  per  Russian  classification  of  production  

18  800 ОКС 77.080.20 (OKS 77.080.20)

Approved  by:  

Director  General  of  ZAO  Energometall  

 

_________________  V.S.  Vakin  

 

____ ________ 2012

       

CLAD PLATES

OF АМg6UМ ALLUMINIUM ALLOY

AND 12Х18Н10Т (TP321) GENERAL PURPOSE STEEL STANDARD SPECIFICATION

TU 1880–003–15190236–2012

(first publication)  

                 

 

Number of pages: 11

Introduction date:

 

   

 St. Petersburg

2012

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           This   specification   covers   bimetallic   plates of АМg6UМ aluminum alloy and 12Х18Н10Т

(TP321) general purpose steel (hereinafter plates), used to produce general purpose adaptors.

The plates are produced by explosion welding as per the technology developed by ZAO  

Energometall.

Patent of the Russian Federation No. 2397850.

Example  of  ordering  information  and  designation  code  in  other  documentation:

The bimetallic  plates of AMg6UM aluminum alloy and 12H18N10T (TR321) steel in  10  mm  

thick, width  of 500 mm, and length  of 2000 mm in conventional modification:

10х500х2000 ТU 1880-003-15190236-2012 Bimetallic  work  piece ------------------------------------------------------------ . 12Х18Н10Т GOST 5632-72 – 5 mm For the complete list of all standards indicated in this specifications, see Annex A.

1 Technical requirements   The bimetallic   plates of AMg6UM aluminum alloy and 12H18N10T (TR321) general

purpose steel   shall   follow   this   standard   specification   and   other   technological   documentation  

approved  by  a  prescribed  procedure.

1.1 Main parameters and characteristics

1.1.1 The plate sizes and tolerances shall meet the requirements specified in Table 1.

Table 1 in millimeters

Total plate thickness

Tolerated plate thickness deviation

Bimetallic layer thickness

AMg6UM aluminum (AMg6+AD1) layer permissible thickness deviation

Plate width

Plate length Steel

12H18N10T (TR321)

AMg6UM aluminium

10 + 2,0 –1,0

5 5 + 1,0 – 0,8

300–1500 400–3000

Notes 1 Steel layer tolerated thickness deviations unlimited. 2 The  plates  can  be  furnished  in  other  sizes  and  configuration  on  the  Customer request, what will be specified in the delivery specification.

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1.1.2 The mechanical properties of specimens sampled from plates in the delivery conditions

should meet the requirements, specified in Table 2.

Table 2

Strength  of  bond, MPa, min. Elongation, %, min.

Shear test Delamination  test 20 60 100

1.1.3 The tolerated non-­‐flatness   of   the   plates   should not exceed 10 mm per meter of the

length.

As   agreed   with   the   Customer, the plates can be delivered under another non-­‐flatness  

standard. The new standard will be specified in the order documentation.

1.1.4 The plate edge should have no lamination.

1.1.5 The plate camber should not exceed 5 mm on the plate length.

1.1.6 The plate surface condition should meet the following requirements:

• At the AMg6UM layer side:

- No lamination, crack or corrosion allowed;

- Minor surface defects, dents, grooves, roll and stamping marks, control and process grinding

traces should not be considered as rejection factors, provided the occurrence depth of those

defects does not exceed 0,5 mm, while the plate remains within a half of the negative plate

thickness tolerance;

- Surface spots and stripes of lubrication, coolant or explosive mixture are tolerated.

• At the corrosion resistant steel side:

- The surface condition at the corrosion resistant steel side should meet the requirements of the

delivery standards;

- Minor surface defects, dents, grooves, roll and stamping marks, control and process grinding

traces should not be considered rejection factors, provided the occurrence depth of those defects

does not exceed 0,5 mm, while the plate remains within a half of the negative plate thickness

tolerance;

- Surface spots and stripes of lubrication, coolant or explosive mixture shall be permitted.

Sandblasting of both sides of the plate is tolerated.

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1.1.7 Sporadic continuity defects with maximum extension in any direction not exceeding 25

mm. The total defect area within a single plate should not exceed 100 mm².

1.1.8 The metal mass determined by the revealed defects area shall not be included into the

useful metal mass.

  1.2 Materials requirements

           1.2.1 All material used for the plate manufacturing should meet the materials technical

standards and provide production of items according to the specifications.

Materials used for the plates manufacturing should have manufacturer’s quality certificates.

1.2.2 The following raw materials are used for the manufacturing:

- AMg6UM aluminum alloy as per GOST 4784, GOST 21631, the thickness of the pure

aluminum double sided clad layer (AD1, AD0) shall be minimum 4 % and maximum 8 % of the

plate thickness, what must be ensured by observance of the ally manufacturer’s technology.

- Corrosion resistant steel of 08-12H18N10T grade as per GOST 5632.

- Corrosion resistant steel of X6CrNiTi18-10 (ISO), 321 (AISI/SAE) grade as per АSTM

A240/A240M.

The steel grade should be specified by the Customer.

1.2.3 The chemical composition and mechanical properties of ANg6UM alloy should comply

with the requirements of GOST 4784.

1.2.4 The chemical composition and mechanical properties of 08-12Х18Н10Т steel should

comply with the requirements of GOST 5632.

1.2.5 Base corrosion resistant steel should be subjected to ultrasonic and intercrystalline

corrosion inspection. The inspection results should be set forth in the manufacturer’s certificates.

1.3 Marking

1.3.1 On one of the corners of each Quality Control Passed plate at a distance at least 25 mm

off the edge the following information should be embossed: bimetal plate grade

(AMG6UM+12H18N10T), lot number, plate number, manufacturer’s QCD marking.

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1.3.2 Stamping plates in amount of 10 % of the lot with a compulsory stamping of the top

plate should be allowed.

1.3.3 Transport marking shall be as per GOST 14192. 1.4 Packing

1.4.1 The plates should be packed in a way when same-same sides are in contact.

1.4.2 The preservation and packaging requirements should be included in the delivery

specification in compliance with GOST 9.510.

  2 Requirements on personnel safety and environment protection 2.1 The plates should be produced in accordance with  the  safety  regulations  effective  at  the  

enterprise.

2.2 As the protection measures against hazards the workers shall be provided with the

personal protective equipment according to the standard industrial norms.

2.3 The materials used shall not contain hazardous, extra-hazardous and highly hazardous

substances (hazard class 1 or class 2 according to GOST 12.1.007), indicated in the table of

hazardous substances according to GOST 12.1.005, polluting the environment and badly

affecting the men’s health.

3 Acceptance regulations   3.1 The   bimetallic   plates   must   be   available   for   acceptance   by   lots. The lot size is to be

stipulated by the delivery contract (delivery specification) or other Customer’s (Consumer’s)

condition. Each  lot  should  comprise  the  bimetallic  plates  of  the  same standard size, made using

the same process.

Each lot should be accepted by a representative on the the production unit.

3.2 Each   lot   should  be  provided  with   the  quality   assurance   certificate on form EN 10204

3.1.

         Should the plates be supplied under the technical supervision of the Registry and/or another

third party, an additional required document should be issued for the plates as required by the

Order (contract).

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In case of plate deliveries for orders under the technical supervision of the Russian Maritime

Registry of Shipping (hereinafter Registry), the Registry’s supervision is to be performed in

accordance with the applicable Registry’s Regulations.

The rolled stock delivery under the Registry’s supervision shall be carried out after

production inspection and issuing a Recognition Certificate For Manufacturer by the Registry.

The production inspection must be made under a separate program agreed with the Registry in

accordance with the procedure established by the Registry’s Regulations.

3.3 Each plate shall be subject of:

- visual and ultrasonic inspection as per GOST 22727;

- non-flatness and camber check;

- geometry control.

3.4 For the mechanical and elongation inspection two plates out of a lot must normally be

selected.

3.5 In case of failure to pass the test re-testing shall be made using a double number of

specimens, cut out of the inspected plate and related to the parameter in question, while the

specimens for retesting may be subjected to a metallographic examination to determine possible

causes of the failure. If any machining defects found on a specimen, such a specimen must be

discarded and replaced with another one. In case of a satisfactory test result using an additional

specimen set, such a plate may be accepted. The lot may be also accepted for delivery in case of

positive results for all other plates of the lot selected for tests. In case of unsatisfactory results of

retesting for at least one plate the plate shall be rejected. In case of two unsatisfactory test results

for plates selected for tests each plate of the lot should be tested.

4 Test methods   4.1 The mechanical inspection should be made using specimens cut at a distance of at least

40 mm off the front/end edge edgeways for at least 20 % of the original plates of each lot.

Form each plate selected for tests three specimens for tension and pull tests to be performed

as per set forth in Appendix B methods shall be sampled.

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4.2 The mechanical inspection should be carried out using the manufacturer’s method.

4.3 The elongation determination shall be made by a tensile test as per GOST 1497 using

proportional flat specimens of type 1 with an initial gauge length lo= 5,65⋅ at the steel layer

side.

4.4 The surface check shall be made by a visual inspection without application any optical

devices. If on one or two plate surfaces are oxidation traces due to interaction with the explosive

mixture, such place shall be subject to sandblasting for a complete surface cleaning. The surface

imperfection depth should be determined after a control grinding. The AMg6UM layer thickness

check shall be made using the manufacturer’s method.

4.5 The geometry control shall be made with a calliper as per GOST 166 and a steel measure

tape with a division value of 1mm as per GOST 7502. The strip thickness should be measured

with a microcaliper as per GOST 6507.

4.6 The flatness deviation shall be governed by GOST 26877.

4.7 To determine the intercrystalline corrosion resistance the data of the corrosion resistant

rolled stock manufacturer’s shall be used. If the intercrystalline corrosion resistance data are

unavailable, the steel layer shall be tested as per GOST 6032 using AMU method on two

specimens, cut out along the rolling direction. The test data shall be an input or steel plates.

Plates, which failed to pass the intercrystalline corrosion resistance test at the manufacturer or by

acceptance test, shall not be used for the bimetallic plate production.

4.8 The rest of requirements with regard to acceptance regulations and test methods shall be

as per GOST 21631.

  5 Transportation and storage 5.1 The plates shall be transported by any type of means of transport, observing the

transportation regulations applicable for the given transportation mode.

5.2 The  bimetallic  plates  are  allowed  to  be  stored  either  in  open  or  closed  storage  facilities.  

In   case  of   being   stored   at   open   areas,   surface  of   base  metal   shall   be   additionally   preventive  

treatment.

6 Guarantees of the manufacturer 6.1 The  Manufacturer  guarantees  that  the  bimetallic  plates  will  be  in  conformity  with  the  

requirements  of  the  presented  specifications  provided  the  Customer  follows  the  transportation  

and  storage  requirements

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Appendix A

(for reference)

List of norms,

referred herein

Designation Description

GOST 9.510-93 Aluminum and aluminum alloys in semi-finished products. General requirements for temporary corrosion protection, packing, transportation and storage.

GOST 12.1.005-88 General sanitary requirements for the air in the working zone GOST 12.1.007-76 Noxious substances. Classification and general safety requirements GOST 166-89 Vernier callipers. Specifications. GOST 1497-84 Metals. Methods of tension test. GOST 4784-97 Aluminum and wrought aluminum alloys. Grades. GOST 5632-72 High-alloy steels and corrosion-proof, heat-resisting and heat treated alloys.

Grades. GOST 6032-2003 Corrosion-resistant steels and alloys. Test methods of intercrystalline

corrosion resistance. GOST 6507-90 Micrometer callipers. Specifications GOST 7502-98 Gauge tapes. Specifications GOST 14192-96 Cargo marking GOST 21631-76 Sheets of aluminum and aluminum alloys. Specifications

GOST 22727-88 Rolled sheet. Ultrasonic test methods.

GOST 26877-91 Metal products. Methods of measuring form variations.

ASTM A578/A578M Standard specification for straight-beam ultrasonic examination of rolled steel plates for special applications

ASTM A240/A240M Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

EN 10204 3.1 Inspection Certificates. Type. 3.1 - Statement of compliance with order and indication of test results carried out as defined by product specification.

 

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Appendix    B  (mandatory)  

 

B.1  Cladding  layer  delamination  test  method  for  bimetallic  plates  

 

 

s  –  cladding  layer  thickness,  mm  H  –  bimetallic  specimen  thickness  ,mm  h    –  shoulder  thickness,  mm    At  H=6÷15mm  h=  (s  +  2)    

Specimen  for  delamination  test  

   

 

 

 

 

 

 

 

 

 

 

Cladding  layer  delamination  test  pattern  

 

 

s  

H-­‐0,5  

h+0,3  +0,2  

cladding  layer  

P  -­‐  load  

plunger  specimen  

support  

die  

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 B.2  Corrosion  resistant  layer  shear  test  for  bimetallic  plates    

 

 

 

   1  —  base  layer  2  —  corrosion  resistant  layer  H  –  bimetallic  specimen  thickness,  mm  s  –  sheared  corrosion  resistant  layer  area  thickness,  mm    b  —  sheared  corrosion  resistant  layer  area  width,  mm    h=  H-­‐s  b=1,5⋅s  H=3⋅s  

Specimen  for  cladding  layer  shear  test  

   

 

 

 

                     

Revision sheet

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Rev.

Sheet numbers Total sheet

number in

document

Document number

File number

and date of accompany

ing document

Sign.

Date Revised Replace

d New Cancelled