Guide to EN ISO 636-A: Rods, wires and deposits for tungsten
inert gas welding of non-alloy and fine grain steels
Symbol
Yield Strength
min. Mpa
Tensile Strength
MPa
Elongation
min. %
35
38
42
46
50
355
380
420
460
500
440-570
470-600
500-640
530-680
560-720
22
20
20
20
18
W
46
3
Wire electrode and
/or deposit/ gas shielded
metal arc welding.
W3Si1
Symbol
Impact Energy
Charpy-V
Temp °C for 47J min.
Z
A
0
2
3
4
5
6
No requirements
+20
0
–20
–30
–40
–50
–60
Symbol
W2 Si
W3 Si1
W4 Si1
W3 Si2
W2Ti
W3 Ni1
W2 Ni2
W2 Mo
W4 Mo
W2 Al
Chemical composition of wire electrodes *
C
Si
Mn
P
S
Ni
Mo
Al
Ti +Zr
0.06 - 0.14
0.06 - 0.14
0.06 - 0.14
0.06 - 0.14
0.04-0.14
0.06-0.14
0.06-0.14
0.08-0.12
0.06-0.14
0.08-0.14
0.50 - 0.80
0.70 - 1.00
0.80 - 1.20
1.00 - 1.30
0.40-0.80
0.50-0.90
0.40-0.80
0.30-0.70
0.50-0.80
0.30-0.50
0.90 - 1.30
1.30 - 1.60
1.60 - 1.90
1.30 - 1.60
0.90-1.40
1.00-1.60
0.80-1.40
0.90-1.30
1.70-2.10
0.90-1.30
0.025
0.025
0.025
0.025
0.025
0.020
0.020
0.020
0.025
0.025
0.025
0.025
0.025
0.025
0.025
0.020
0.020
0.020
0.025
0.025
0.15
0.15
0.15
0.15
0.15
0.80-1.50
2.10-2.70
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.40-0.60
0.40-0.60
0.15
0.02
0.02
0.02
0.02
0.05-0.20
0.02
0.02
0.02
0.02
0.35-0.75
0.15
0.15
0.15
0.15
0.05-0.25
0.15
0.15
0.15
0.15
0.15
* If not specified Cr <0.15, Cu <0.35, V <0.03. Residual copper content in the steel plus any coating shall not exceed 0.35%
Single values shown in the table mean maximum values.
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