Submerged Arc Welding Technical Handbook - Esab

Classification Standards
EN 756 Guide to the EN coding, EN 756 for flux/wire combinations
Example: OK Flux 10.72 / OK Autrod 12.24 - S 46 3 AB S2Mo
S 46 3 AB S2Mo
Chemical composition of flux
S Submerged
Arc welding
Symbol for tensile properties
Grade
Designation
Yield
Strength
MPa (min)
Tensile
Strength
MPa
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
Elongation
% (min)
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
Symbol for impact properties
Symbol Minimum parent
material yield
strength MPa
2T 275 370
3T 355 470
4T 420 520
5T 500 600
Minimum tensile
strength of the
welded joint MPa
Grade
Designation
Type of wire according to EN 760 and chemical composition of wire electrode
Charpy-V Impact
J (min)
Z No requirements
A 47 20
0 47 0
2 47 -20
3 47 -30
4 47 -40
5 47 -50
6 47 -60
7 47 -70
8 47 -80
Grade
Designation C Si Mn Ni Mo Cr others
SZ Any other agreed analysis
S1 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 *)
Temp °C
S2Ni1Cu 0.06-0.12 0.15-0.35 0.70-1.20 0.65-0.90 0.15 -0.40 *) Cu: 0.40-0.65
S3Ni1Cu 0.05-0.15 0.15-0.40 1.20-1.70 0.60-1.20 0.15 -0.15 *) Cu: 0.30-0.60
*) Other elements: Cu -0.30
Al -0.030
P, S 0,025 or 0,020
All-weld metal chemical composition of tubular cored electrode-fluxcombinations.
Chemical composition %
Symbol
Mn Ni Mo Cu
T3 1.4-2.0 - - 0.3
T3Ni1 1.4-2.0 0.6-1.2 - 0.3
EN 760
Guide to the EN coding, EN 760 for fluxes
Example: OK Flux 10.71 - SA AB 1 67 AC H5
SA AB 1 67 AC H5
Method of manufacture
Hydrogen content of deposited metal
S Submerged
Arc welding
Symbol
F Fused flux
A Agglomerated flux
M Mixed flux
Symbol Hydrogen content
ml/100 g deposited metal (max)
H5 5
H10 10
H15 15
Chemical composition of flux
Type of current
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
Application
Class
1 SA welding of non alloy and low
alloy steels
2 SA welding and surfacing of
stainless and heat resisting Cr and
Cr-Ni steels and/or Ni and Ni-based
alloys
3 Surfacing purposes yielding a wear
resisting weld metal by alloying C,
Cr or Mo from flux
Symbol
DC Direct current only
AC Alternating and direct current
Metallurgical behaviour
Symbol Metallurgical
behaviour
1 Burn-out 0.7 -
Contribution
from flux
2 Burn-out 0.5 - 0.7
3 Burn-out 0.3 - 0.5
4 Burn-out 0.1 - 0.3
5 0 - 0.1
6 Pick-up 0.1 - 0.3
7 Pick-up 0.3 - 0.5
8 Pick-up 0.5 - 0.7
9 Pick-up 0.7 -
Class 1 Si and Mn as above
Class 2 Stating corresponding
chemical symbols
Class 3 Stating corresponding
chemical symbols
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