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