Guide to EN ISO 3581-A: MMA electrodes for stainle ss and heat

resisting steels

Covered electrode/

manual metal arc

welding.

E 19 12 2

Type of electrode covering

R =rutile covering

B =basic covering

R

Symbol

1

2

3

4

5

3

4

Symbol

1

2

3

4

5

6

7

8

Metal recovery, %

<105

<105

>105 <125

>105 <125

>125 <160

>125 <160

>160

>160

Type of current

AC +DC

DC

AC +DC

DC

AC +DC

DC

AC +DC

DC

Welding position

All positions

All positions, except vertical down

Flat butt weld, flat fillet weld, horizontal-vertical fillet weld

Flat butt weld, flat fillet weld

Vertical down and positions according to symbol 3

Chemical composition of all-weld metal , % *

Alloy

Symbol

C

Si

Mn

P

S

Cr

Ni

Mo

Martensitic/ferritic

13

0.12

1.0

1.5

0.030 0.025 11.0-14.0

0.60

0.75

13 4

0.06

1.0

1.5

0.030 0.025 11.0-14.5 3.0-5.0

0.4-1.0

17

0.12

1.0

1.5

0.030 0.025 16.0-18.0

0.60

0.75

Austenitic

19 9

0.08

1.2

2.0

0.030 0.025 18.0-21.0 9.0-11.0

0.75

19 9 L

0.04

1.2

2.0

0.030 0.025 18.0-21.0 9.0-11.0

0.75

19 9 Nb

0.08

1.2

2.0

0.030 0.025 18.0-21.0 9.0-11.0

0.75

19 12 2

0.08

1.2

2.0

0.030 0.025 17.0-20.0 10.0-13.0 2.0-3.0

19 12 3 L

0.04

1.2

2.0

0.030 0.025 17.0-20.0 10.0-13.0 2.5-3.0

19 12 3 Nb

0.08

1.2

2.0

0.030 0.025 17.0-20.0 10.0-13.0 2.5-3.0

19 13 4 N L

0.04

1.2

1.0-5.0 0.030 0.025 17.0-20.0 12.0-15.0 3.0-4.5

Austenitic-ferritic. High corrosion resistance.

22 9 3 N L

0.04

1.2

2.5

0.030 0.025 21.0-24.0 7.5-10.5

2.5-4.0

25 7 2 N L

0.04

1.2

2.0

0.035 0.025 24.0-28.0 6.0-8.0

1.0-3.0

25 9 3 Cu N L

0.04

1.2

2.5

0.030 0.025 24.0-27.0 7.5-10.5

2.5-4.0

25 9 4 N L

0.04

1.2

2.5

0.030 0.025 24.0-27.0 8.0-11.0

2.5-4.5

Fully austenitic. High corrosion resistance.

18 15 3 L

0.04

1.2

1.0-4.0 0.030 0.025 16.5-19.5 14.0-17.0 2.5-3.5

18 16 5 N L

0.04

1.2

1.0-4.0 0.035 0.025 17.0-20.0 15.5-19.0 3.5-5.0

20 25 5 Cu N L

0.04

1.2

1.0-4.0 0.030 0.025 19.0-22.0 24.0-27.0 4.0-7.0

20 16 3 Mn N L

0.04

1.2

5.0-8.0 0.035 0.025 18.0-21.0 15.0-18.0 2.5-3.5

25 22 2 N L

0.04

1.2

1.0-5.0 0.030 0.025 24.0-27.0 20.0-23.0 2.0-3.0

27 31 4 Cu L

0.04

1.2

2.5

0.030 0.025 26.0-29.0 30.0-33.0 3.0-4.5

Special types

18 8 Mn

0.20

1.2

4.5-7.5 0.035 0.025 17.0-20.0 7.0-10.0

0.75

18 9 Mn Mo

0.04-0.14

1.2

3.0-5.0 0.035 0.025 18.0-21.5 9.0-11.0

0.5-1.5

20 10 3

0.10

1.2

2.5

0.030 0.025 18.0-21.0 9.0-12.0

1.5-3.5

23 12 L

0.04

1.2

2.5

0.030 0.025 22.0-25.0 11.0-14.0

0.75

23 12 Nb

0.10

1.2

2.5

0.030 0.025 22.0-25.0 11.0-14.0

0.75

23 12 2 L

0.04

1.2

2.5

0.030 0.025 22.0-25.0 11.0-14.0 2.0-3.0

29 9

0.15

1.2

2.5

0.035 0.025 27.0-31.0 8.0-12.0

0.75

Heat resisting types

16 8 2

0.08

0.6

2.5

0.030 0.025 14.5-16.5 7.5-9.5

1.5-2.5

19 9 H

0.04-0.08

1.2

2.0

0.03

0.025 18.0-21.0 9.0-11.0

0.75

25 4

0.15

1.2

2.5

0.030 0.025 24.0-27.0 4.0-6.0

0.75

22 12

0.15

1.2

2.5

0.030 0.025 20.0-23.0 10.0-13.0

0.75

25 20

0.06-0.20

1.2

1.0-5.0 0.030 0.025 23.0-27.0 18.0-22.0

0.75

25 20 H

0.35-0.45

1.2

2.5

0.030 0.025 23.0-27.0 18.0-22.0

0.75

18 36

0.25

1.2

2.5

0.030 0.025 14.0-18.0 33.0-37.0

0.75

* Single values shown in the table are maximum values.

267

Other elements

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75, Ta+Nb 8 x C < 1.1

Cu 0.75

Cu 0.75

Cu 0.75, Ta+Nb 8 x C < 1.1

Cu 0.75, N 0.20

Cu 0.75, N 0.08-0.20

Cu 0.75, N 0.20

N 0.10-0.25, Cu 1.5-3.5

N 0.20-0.30, Cu 1.5, W 1.0

Cu 0.75

Cu 0.75, N 0.20

Cu 1.0-2.0, N 0.25

Cu 0.75, N 0.20

Cu 0.75, N 0.20

Cu 0.6-1.5

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75, Ta+Nb 8 x C < 1.1

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75

Cu 0.75