Welding General Information

8/7/2019 Welding General Information

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General informationand tables

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General information

Handwelding electrodes

Official approval

In addition to the official approval given in this

catalogue, many OK electrodes are approved byforeign authorities, railway boards, private com-panies and so on. Information about the differenttypes of approval is available on request.

Tensile properties

Unless otherwise stated, tensile properties referto all weld metal test pieces prepared accordingto the rules of the classification societies using4 and 6 mm diameter electrodes.

Welding currentMaximum and minimum values are given. Themost suitable welding current depends largely onthe size of the workpiece, the welding positionand the type of joint.

Small workpieces require a lower current, largerworkpieces a higher current, depending on thedissipation of heat from the joint.

Cold cracking

Cold cracking will only occur if the following three

factors are present at the same time:1. Hard phases in the weld, preferably martensite

2. Sufficient stress

3. Hydrogen dissolved in the weld metal

Hard phases form when the weld is cooledrapidly from melting temperature to room tempe-rature. Alloying elements, mostly carbon, are for-ced to dissolve in the weld metal and make itbrittle. The following formula describes this pro-

cess in the case of standard carbon-manganesesteel.

%Mn %(Cr+Mo+V) %(Ni+Cu)EC=%C+ 6 + 5 + 15

Steels with EC=0.35 and below are usually wel-dable without any problems at normal steel sizes.For the more highly alloyed steels and steels withthicker dimensions, an elevated working tempe-rature is necessary in order to reduce the coolingrate.

The elevated temperature also allows the hydro-gen to diffuse.

To determine elevated working temperatures,please consult BS 5135: 1984 or SS 064025. Ifthe EC dimension of the plates and heat inputare known, these standards will state whetherheating is necessary and the level at which itshould take place.

Tension cannot be avoided when welding, assteel expands when heated, although correctplanning and heat treatment can reduce tensionconsiderably.

Hydrogen forms from water in the surroundings

and from the electrode coating. The water is divi-ded into oxygen and hydrogen in the arc and thehydrogen in particular has a strong tendency todissolve in the weld metal and initiate cold crack-ing.

Conclusion: Dry basic electrodes when there isrisk of cold cracking.

Labelling

The electrode type is clearly marked on the coa-ting of each electrode near the grip end, e.g.OK 48.00.


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Choice of suitable electrodeThe OK electrodes in this catalogue are placedinto groups according to the type of alloy deposit-ed. Within each group of electrodes for weldingmild, low-alloy and stainless steels, there areseveral cases in which many different electrodesare designed for welding the same type of steel.So, for each steel grade, there are often a largenumber of electrode types to choose from, all ofwhich produce similar weld metal compositionsbut have different coatings, welding properties,welding speeds and weld metal quality. Thislarge choice makes it possible to choose theelectrode which produces the right weld metalquality at the lowest cost.

When selecting an electrode, the first rule is toselect one which produces a weld metal qualityequal to or better than that of the base materialand, when necessary, is approved for the mate-rial in question. Welding position and type of jointare other factors which influence the choice ofelectrode, as different electrodes have differentproperties in different welding positions andtypes of joint.

General information about the influence

of coating type on welding properties,welding speed and weld metal quality

Rutile electrodes giving about 100% weld metalrecovery are easy to strike and use and are parti-cularly suitable for short welds in mild steel, forfillet welds, for welding sheet steels and for brid-ging large joint gaps. The welds have a fine finishand spatter losses are negligible. The weldingspeed is moderate.

Unalloyed electrodes

Unalloyed rutile electrodes are not normallyrecommended for welding steel with a nominaltensile strength exceeding 440 MPa (45 kp/mm2). Rutile electrodes are relatively insensitiveto moisture.

High-efficiency rutile electrodes

High-efficiency rutile electrodes generally pro-duce a higher welding speed, which increases asthe weld metal recovery increases, up to a maxi-mum of about 140 g/minute for 6 mm diameterOK Femax 33.80.

They are all easy to use, produce excellent slagdetachability, fine bead appearance and are par-ticularly suitable for welding horizontal/vertical fil-lets. The weld metal has tensile properties whichare as high as, or somewhat higher than, those

of the weld metal from unalloyed basic electro-des but have lower elongation and impactstrength.

The evenness of the weld and the smooth transi-

tion of the base material make joints producedwith rutile electrodes at least as good in terms offatigue strength as unmachined joints producedusing basic electrodes. Unalloyed rutile electro-des, irrespective of their efficiency, can berecommended for welding mild steel with a nomi-nal tensile strength of 440 MPa (45 kp/mm2).When it comes to the tensile strength of thedeposit, rutile electrodes can also be used forwelding steels with a nominal tensile strength ofmore than 440 MPa (45 kp/mm2), but, as a gene-ral rule, only electrodes producing a weld metal

with a low hydrogen content, e.g. basic, rutile-basic or zircon-basic electrodes, should be usedto weld these steels.

Acid electrodes

Acid electrodes without iron powder in the cover-ing are easier to strike than basic electrodes butmore difficult to strike and re-strike than rutileelectrodes. The welding speed is moderate. Theweld beads are smooth and shiny. The slag isinflated and easy to remove. The weld metal hasa lower yield stress and tensile strength compar-ed with that produced by rutile electrodes, but ithas higher elongation and impact strength.

This type of electrode, which completely dominat-ed the market a few decades ago, has graduallybeen replaced by rutile electrodes for welding inthe flat position and basic electrodes for positio-nal welding. Unalloyed acid electrodes are suita-ble for welding steels with a nominal tensilestrength of up to 440 MPa (45 kp/mm2).

High-efficiency acid electrodes

High-efficiency acid electrodes have a considera-bly higher welding speed than normal electrodes,up to a maximum of about 120 g/min for 6 mmdiameter OK Femax 39.50. The beads aresmooth and shiny. The slag is inflated and easyto remove. High-efficiency acid electrodes areparticularly suitable for making butt joints and fil-let welds in the flat position. OK Femax 39.50 inlong lengths is suitable for gravity welding withshort-neck equipment.

The weld metal has the same strength as thatproduced by normal acid electrodes and therange of applications is therefore similar, i.e. theyare suitable for welding mild steels with a nomi-nal tensile strength of no more than 440 MPa(45 kg/mm2).

General information


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Unalloyed basic electrodes

Unalloyed basic electrodes give moderate weld-ing speed in the flat position but are faster thanother types when welding vertically upwards. The

reason for this is that basic electrodes can bedeposited at a higher current in the vertical posi-tion than other types of electrode. In addition, theamount of weld metal deposited per electrode isgreater than that of other electrodes which canbe used in this position. This results in a smallernumber of electrode changes. The normal resultis therefore a higher fusion rate and higher arc-time factor when welding vertically upwards withbasic electrodes compared with other types.

The slag is normally not quite as easy to removeas the slag from acid or rutile electrodes, but, in

spite of this, it can be classed as easily detacha-ble. The slag from basic electrodes has a lowermelting point than that from rutile or acid electro-des. The risk of slag inclusions during normalproduction welding is therefore unusually smallwhen basic electrodes are used, even if the slagis not completely removed between beads duringmulti-run welding.

The weld metal from basic electrodes has a lowhydrogen content and usually has good tough-ness even at low temperatures. Basic electrodes

are less likely to produce either hot cracks or coldcracks compared with other types of electrode.The superiority of basic electrodes from thispoint of view appears when welding manganese-alloyed structural steels, pressure-vessel steelsand ship's plate with a nominal tensile strength of490-530 MPa (50-54 kp/mm2). The higher thehardenability of the steel to be welded, the grea-ter the necessity to use basic electrodes and thegreater the need for low moisture content in thecoating.

Zircon-basic, high-efficiency electrodesZircon-basic, high-efficiency electrodes are thefastest of all and are preferably deposited in theflat position. OK Femax 38.95 deposits a maxi-mum of 250 g/min. with 6 mm diameter electro-des. Zircon-basic, high-efficiency electrodes canbe used for welding the same steels as unalloyedbasic electrodes. OK Femax 38.65 is suitable forwelding butt joints and fillet joints in the horizon-tal, vertical and flat positions.

OK Femax 38.95 is recommended for weldingbutt joints and fillet joints.

Rutile-basic, high-efficiency electrodes

Rutile-basic, high-efficiency electrodes combinethe good welding properties of rutile electrodeswith the high weld metal quality of basic electro-

des. They are therefore the best electrodes forperforming horizontal-vertical fillet welds in highstrength steels, where ordinary rutile, high-effi-ciency electrodes are not permitted. They can beused for welding the same steels as standardunalloyed basic electrodes or unalloyed zircon-basic, high-efficiency electrodes.

OK Femax 38.85 is the fastest low-hydrogenelectrode for horizontal fillet welds.

Cellulose electrodes

Cellulose electrodes are easy to use in all weld-ing positions and are particularly good for verticaland overhead welding. Cellulose electrodes arerecommended for all-positional welding wherethe mechanical properties of the deposit are ofthe greatest importance and radiographic requi-rements must be met. Vertical and overhead wel-ding often require an electrode one size larger incomparison to electrodes with other types of coa-ting. Cellulose electrodes are extremely good forvertical-down welding.

Higher tensile steel requires preheating and

higher interpass temperatures than when thewelding is done with low-hydrogen electrodes.

General information


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Choose the correct OK

electrodes, wires and fluxes

for hardfacing and

maintenance.

Recommendations for the right choice of electro-des for joining dissimilar materials can be foundin Figs 1 and 2 on the next page.

The conditions to be considered when choosingthe correct electrode, wire and flux for hardfacingand maintenance are summarised in the follo-wing outline.

A classification of weld metal resistance to diffe-

rent kinds of working condition can be found inTable 1.

The working conditions for an object that is goingto be repaired are often known. The table provi-des information about suitable electrodes andthe different kinds of attack which must be takeninto account.

The recommended OK electrodes, wires andfluxes for some of the most common objects forhardfacing and maintenance by welding can befound in Table 2.

Short rules for choosing the correct typeof weld metal alloy for hardfacing andcladding

With regard to:

1. Type of wear2. Working conditions3. Machinability requirements

Useful information when choosing the correcttype of alloy

1. The composition of the material to be weldedwhen decidinga) which types of welding alloy are usable

and suitableb) if preheating is favourablec) if welding a buffer layer is necessary

2. Conditions for weldinga) Is preheating possible or not?

If it is not possible, hardenable welding alloys canonly be used to a very limited extent.

For steel and cast iron weldments:austenitic or non-ferrous alloys are preferable:

OK 67.45, OK 67.75 austeniticOK 68.81 and OK 68.82 austenitic-ferriticOK 92.18, OK 92.58, OK 92.35 non-ferrous.

b) The welding positionc) Can submerged arc welding or

gas metal arc welding be applied?d) For which of the applicable welding proces-

ses is suitable filler material available?

3. Working conditions for the repaired workpiecea) Type of wear: abrasive, erosive or

cavitationTo resist abrasive wearby sharp-edgedblast stone and ore, a hard surface or awork-hardening surface is required ordesirable.Recommended:OK 84.78, OK 84.80OK 84.58, OK 83.65OK 86.28, OK 86.08

To resist erosive wear, a hard surface and afine-grained microstructure in the weldmetal is required.Recommended:OK 84.80

OK 84.78OK 85.65, OK 84.58OK 83.65OK 84.52

Cavitation attacks in water turbines canusually be prevented by cladding with aus-tenitic electrodes.OK 63.35 is the most frequently-used elec-trode for this purpose, but the following arealso suitable:OK 67.70OK 67.71

4. Environmenta) Corrosive or non-corrosive?b) The temperature, high or low?c) To resist wear in a corrosive environment,

the weld metal must be resistant to bothcorrosion and wear. So, depending on theseverity of the corrosion attacks, an alloywith some degree of corrosion resistance isrequired.

General information


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General information

Choose the right OK Electrodes for joining dissimilar materials

1. OK 67.70, OK 67.75

2. OK 67.45, OK 68.81, OK 68.82

Fig. 1

1. OK 92.262. OK 67.70, OK 67.75, OK 67.45

3. OK 63.30, OK 63.35

Never use unalloyed electrodes for these joints

1. OK 92.182. OK 92.60, OK 92.58

Fig. 2

1. OK 92.60, OK 92.582. OK 92.18

OK 94.25

1. First hand choice2. Second hand choice3. Third hand choice

Mild steel andcarbon-manganese steel

All types ofstainless steel

Low-alloy steel for elevatedtemperature service

All types ofstainless steel

All typesof steel

Castiron

Castiron

Nodularcast iron

Malleable

cast iron

Nodular

cast iron

Nodular

cast iron

All types

of steel

All types of steel Copper andcopper-alloy

All types of castiron


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General information

Table 1. Hardfacing and cladding.

Choose the right OK electrode for different working conditions

ENVIRONMENT Resistance-Suitability

5. Superior, 3. Good, 1. Limited usability

CORROSIVE ENVIRONMENT

Requirements:

Corrosion resistance

5. OK 92.26, OK 92.35, OK 92.86, OK 94.25, OK 94.55,

OK 93.01, OK 93.12

4. OK 68.81, OK 68.82, OK 67.45, OK 67.52

3. OK 84.80, OK 84.78, OK 84.42, OK 84.52

2. OK 84.58, OK 83.50

1. OK 83.28, OK 83.65, OK 85.58, OK 85.65, OK 86.08

HIGH TEMPERATURE

Oxidizing

Requirements:

Scaling resistance

5. OK 92.26, OK 92.35, OK 93.01

4. OK 68.81, OK 68.82, OK 84.78, OK 67.45, OK 83.65, OK 84.80

3. OK 84.42, OK 84.52, OK 84.58, OK 85.58, OK 85.65

2. OK 83.50, OK 92.86

1. OK 83.28, OK 86.08, OK 86.28

Annealing, Softening

Requirements:

Hardness at high temperature, annealing

resistance

5. OK 92.35, OK 93.01, OK 93.12

4. OK 84.78, OK 85.58, OK 85.65

3. OK 84.42, OK 84.52, OK 84.58, OK 83.50, OK 83.65

2. OK 83.28, OK 86.08, OK 86.28, OK 68.81, OK 68.82

1. OK 67.45, OK 67.52

LOW TEMPERATURERequirements:

Cold toughness

5. OK 92.26, OK 92.35, OK 92.86, OK 67.45, OK 94.25, OK 94.55

4. OK 67.52, OK 86.28, OK 86.08

3. OK 83.28, OK 68.81, OK 68.82

2. OK 83.50, OK 84.42, OK 84.521. OK 83.65, OK 84.58, OK 84.78, OK 85.65, OK 93.01

TYPE OF WEAR

Impact, high surface pressure

Requirements:

Impact-resistance and

resistance to crushing

5. OK 92.35, OK 86.08, OK 86.28, OK 68.81, OK 68.82, OK 93.07

4. OK 67.45, OK 67.52, OK 83.28

3. OK 92.25, OK 93.06

2. OK 84.42, OK 84.52, OK 85.65, OK 93.12

1. OK 83.50, OK 83.65, OK 84.58, OK 84.78, OK 94.25,

OK 94.55, OK 93.01

Wear by blast stone and ore

Requirements:

High surface-hardness orcold-work hardening weld metal

5. OK 84.78, OK 84.84, OK 84.80, OK 93.01

4. OK 86.08, OK 86.28, OK 83.65, OK 85.65, OK 93.12

3. OK 83.50, OK 84.58, OK 84.42, OK 84.52, OK 93.062. OK 85.58, OK 68.81, OK 68.82, OK 67.45, OK 67.52, OK 93.07

1. OK 83.28

Wear by fine grained materials

Sand and clay

Requirements:

High surface hardness

5. OK 84.84, OK 84.78, OK 84.80, OK 93.01

4. OK 83.65, OK 85.65, OK 93.12

3. OK 84.58, OK 83.50, OK 93.06

2. OK 84.42, OK 84.52, OK 68.81, OK 68.82, OK 85.38

1. OK 67.45, OK 67.52, OK 83.28, OK 86.08, OK 86.28, OK 93.07

Cavitation 5. OK 63.35, OK 67.71, OK 93.06, OK 93.074. OK 67.45, OK 67.52, OK 94.55, OK 94.25

3. OK 84.42

2. OK 84.52, OK 84.58, OK 93.01, OK 93.121. OK 83.28


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Table2.A

pplicationrangeelectrodes,wiresandfluxesforhardfacingandmaintenanc

e

Object

Requiredweld

hardness

ConsumablesforMMA

ConsumablesforMAG,M

IG,

FCAW,

SAW

Recommendedpost

weldtreatm

ent

Sha

fts

NB!Stressre

liefisrecommen

de

dfor

sha

ftssu

bje

cttofatigue

62HRC

OK84

.80

>62HRC

OK84

.84

OKTu

bro

dur

15

.80

Impe

llers

form

illsan

dcrus

hers

55-5

8

HRC

OK84

.58

OKTu

bro

dur

15

.52

58-6

3

HRC

OK83

.65

,OK84

.78,

OK84

.80

OKTu

bro

dur

14

.70*

>63H

RC

OK84

.84

OKTu

bro

dur

15

.80

Excava

tortee

th,

forge

d:

Jo

ining

OK48

.xx,

OK55

.00

OKFemax

38

.65

OKAu

tro

d12

.51

Hard

fac

ing

55-5

8

HRC

OK48

.xx+

OK84

.58

OKTu

bro

dur

15

.41+

OKTu

bro

dur

15

.52

58-6

3

HRC

OK48

.xx+

OK83

.65

OK84

.78

,OK84

.80

OKTu

bro

dur

14

.70*

Excava

tortee

th,

13%Mns

tee

l

Jo

ining

OK63

.35

,OK67

.45

OK67

.52

OKTu

bro

dur

14

.71

Hard

fac

ing

5

0H

RC

OK48

.xx

OKTu

bro

dur

15

.41

55-5

8

HRC

OK48

.xx+

OK84

.58

OKTu

bro

dur

15

.52

>62H

RC

OK84

.84

OKTu

bro

dur

15

.80

General information


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Excava

torb

uc

ke

ts,

13%Manganeses

tee

l:

Jo

ining

OK63

.35

,OK67

.45

OK67

.52

,OK67

.75

OKTu

bro

dur

14

.71

Hard

fac

ing

55-5

8

HRC

OK48

.xx+

OK84

.58

OKTu

bro

dur

15

.52

58-6

3

HRC

OK84

.78+

OK84

.80

OKTu

bro

dur

14

.70*

Whee

lbeds

forcranes,

lorr

iesan

d

loa

dingwag

ons

2.6 - 3.8Mn1Ni >1.4-2.0 0.6 - 1.21NiMo 1.4 0.3 - 0.6 0.6 - 1.2

Z Any other agreed composition

1) If not specified:Mo 160 dc1) In order to demonstrate operability on ac, tests

shall be carried out with no load voltage nothigher than 65V.

2) ac = alernation currentdc = direct current

A Acid

C Cellulosic

RRCRA

RB

RutileRutile-cellulosicRutile-acid

Rutile-basicB Basic

General information


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Guide to the EN coding, EN 756 for flux/wire combinations

Symbol for tensile properties

Chemical composition of flux

Symbol for impact properties

Type of wire according to EN 760 and chemical composition of wire electrode

S 35 4 AB S1

S SubmergedArc welding

GradeDesignation

YieldStrengthMPa (min)

TensileStrengthMPa

Elongation% (min)

35 355 440-570 22

38 380 470-600 20

42 420 500-640 20

46 460 530-680 20

50 500 560-720 18

Symbol Minimum parentmaterial yieldstrength MPa

Minimum tensilestrength of thewelded joint MPa

2T 275 370

3T 355 470

4T 420 520

5T 500 600

Symbol Type of flux

MS Manganese-silicate

CS Calcium-silicate

ZS Zirconium-silicate

RS Rutile-silicate

AR Aluminate-rutile

AB Aluminate-basic

AS Aluminate-silicate

AF Aluminate-fluoride-basic

FB Fluoride-basic

Z Any other composition

GradeDesignation

Charpy-V ImpactJ (min)

Temp C

Z No requirementsA 47 200 47 02 47 -20

3 47 -304 47 -405 47 -506 47 -607 47 -708 47 -80

GradeDesignation

C Si Mn Ni Mo Cr

SZ Any other agreed analysisS1 0.05-0.15 -0.15 0.35-0.60 -0.15 -0.15 -0.15 *)S2 0.07-0.15 -0.15 0.80-1.30 -0.15 -0.15 -0.15 *)S3 0.07-0.15 -0.15 1.30-1.75 -0.15 -0.15 -0.15 *)S4 0.07-0.15 -0.15 1.75-2.25 -0.15 -0.15 -0.15 *)S1Si 0.07-0.15 0.15-0.40 0.35-0.60 -0.15 -0.15 -0.15 *)S2Si 0.07-0.15 0.15-0.40 0.80-1.30 -0.15 -0.15 -0.15 *)S2Si2 0.07-0.15 0.40-0.60 0.80-1.20 -0.15 -0.15 -0.15 *)S3Si 0.07-0.15 0.15-0.40 1.30-1.85 -0.15 -0.15 -0.15 *)S4Si 0.07-0.15 0.15-0.40 1.85-2.25 -0.15 -0.15 -0.15 *)S1Mo 0.05-0.15 0.05-0.25 0.35-0.60 -0.15 0.45-0.65 -0.15 *)S2Mo 0.07-0.15 0.05-0.25 0.80-1.30 -0.15 0.45-0.65 -0.15 *)S3Mo 0.07-0.15 0.05-0.25 1.30-1.75 -0.15 0.45-0.65 -0.15 *)S4Mo 0.07-0.15 0.05-0.25 1.75-2.25 -0.15 0.45-0.65 -0.15 *)S2Ni1 0.07-0.15 0.05-0.25 0.80-1.30 0.80-1.20 -0.15 -0.15 *)S2Ni1.5 0.07-0.15 0.05-0.25 0.80-1.30 1.20-1.80 -0.15 -0.15 *)S2Ni2 0.07-0.15 0.05-0.25 0.80-1.30 1.80-2.40 -0.15 -0.15 *)S2Ni3 0.07-0.15 0.05-0.25 0.80-1.30 2.80-3.70 -0.15 -0.15 *)S2Ni1Mo 0.07-0.15 0.05-0.25 0.80-1.30 0.80-1.20 0.45-0.65 -0.20 *)S3Ni1.5 0.07-0.15 0.05-0.25 1.30-1.70 1.20-1.80 -0.15 -0.20 *)

S3Ni1Mo 0.07-0.15 0.05-0.25 1.30-1.80 0.80-1.20 0.45-0.65 -0.20 *)S3Ni1.5Mo 0.07-0.15 0.05-0.25 1.20-1.80 1.20-1.80 0.30-0.50 -0.20 *)S2Ni1Cu 0.06-0.12 0.15-0.35 0.70-1.20 0.65-0.90 0.15 -0.40 *)S3Ni1Cu 0.05-0.15 0.15-0.40 1.20-1.70 0.60-1.20 0.15 -0.15 *)*) Other elements: Cu -0.30

Al -0.030

General information


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Guide to the EN coding, EN 758, for flux cored wires.

Symbol for strength and elongation

Symbol for impact properties

Symbol for chemical composition of all weldmetal

Symbol for diffusible hydrogen (optional)

Symbol for the welding position

Shielding gas

Description of core

T 46 3 1Ni B M 4 H5

Sym-bol

min. yieldstrength1) (MPa)

Tensilestrength(MPa)

min. elon-gation2) (%)

35 355 440-570 22

38 380 470-600 2042 420 500-640 2046 460 530-680 2050 500 560-720 181) For the yield strength the lower yield (Rel) shall be

used when yielding occurs, otherwise the 0.2%proof stress (Rp0.2) shall be used

2) L0 = 5d

Symbol Minimum av. impact energy 47J C

Z no requirements

A +200 02 -203 -304 -405 -506 -60

Alloy symbol Chemical composition1)2)3) %

Mn Mo Ni

no symbol 2.0

Mo 1.4 0.3 - 0.6 MnMo >1.4 - 2.0 0.3 - 0.6 1Ni 1.4 0.6 - 1.21.5Ni 2Ni 1.4 1.8 - 2.63Ni 1.4 >2.6 - 3.8Mn1Ni >1.4-2.0 0.6 - 1.21NiMo 1.4 0.3 - 0.6 0.6 - 1.2

Z Any other agreed composition

1) If not specified:Mo


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Welding data and joint preparation

Typical welding data and recommended joint preparation for submerged arc weldingmild steel and carbon-manganese structural steels with OK Flux 10.40, OK Flux 10.47,OK Flux 10.70, OK Flux 10.71, OK Flux 10.72, OK Flux 10.76 and OK Flux 10.81.

Type of joint Platethickness

mm

Wirediameter

mm

RunNo

Arcvoltage

V

Weldingcurrent

A

Weldingspeed

cm/min.

6 3 1 33 400 802 33 430

8 4 1 34 480 602 34 550

10 4 1 34 550 552 35 650

12 4 1 35 650 502 35 700

14 4 1 35 700 40

2 35 75016 4 1 32 600 50

2 35 65018 4 1 34 700 50

2 35 65020 4 1 36 750 40

2 35 650

18 6 1 36 700 302 36 850

20 6 1 36 800 252 36 850

25 6 1 36 850 202 36 950

30 6 1 36 900 152 36 1000

2 2 1 28 325 125

4 2.5 1 30 450 70

6 3 1 31 510 50

8 3 1 32 525 45

10 3 1 33 600 35

20 4 1 29 650 502 32 750 503 34 750 40

X 30 550 5025 4 1 29 650 50

2 30 700 503, 4 32 750 405 36 750 40X 30 550 50

30 4 1 29 650 502 30 700 50

3-5 32 750 506 34 750 40

7-8 36 750 40X 30

1

2

1

70

2

10

1

70

2

6-8

Cu

1-n60

X

6

General information


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518

Typical welding data for submerged arc fillet welding mild steel andcarbon-manganese structural steels withOK Flux 10.47, OK Flux 10.71 andOK Flux 10.81


mm

Wirediameter

mm

Throatthickness

mm

Arcvoltage

V

Weldingcurrent

A

Weldingspeed

cm/min.

Single welding head

6 3 3 3032 500 100 8 4 4 3032 450 6010 4 5 3032 650 50

8 4 4 3234 700 11512 4 4 3234 800 14015 4 7 36 800 45

15 4 36 750 45

20 4 36 750 40

Twin wire

2x1.6 4 32 800 120 2x2.0 5 34 300 110

Two welding heads + ~

4 4 +32 800 140~38 700

4 4 +32 800 140~38 700

4 4 +32 800 140

~38 700 4 5 +32 800 90

~35 700

General information


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Submerged arc welding 18/8 stainless steel. Joint preparation and typical weldingdata for filler materials OK Autrod 16.10 + OK Flux 10.92, 10.93 and similarOK-combinations.


mm

Wirediameter

mm

RunNo

Arcvoltage

V

Weldingcurrent

A

Weldingspeed

m/h

6 3 1 34 400 802 500 60

8 4 1 34 500 802 600 60

Manual welded root bead

10 4 1 34 600 402 600 60

12 4 1 34 600 35

2 600 50

20 4 1 34 600 352 600 303 600 40

25 4 1 34 600 402 600 353 600 354 34 600 40

8 4 1 34 450 552 34 550 50

10 4 1 34 500 402 34 600 50

12 4 1 34 500 352 34 600 40

14 4 1 34 550 352 34 600 35

1

2

160

2gap: 0-2 mm

2

1.360

2gap: 0-2 mm

2

1.460

2.3gap: 2 mm

2

1.460

2.3gap: 0-2 mm

2

90

5

70

5

70

5

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