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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