Welding Standards
Unalloyed Rod Electrodes acc. to DIN EN ISO 2560-A
Classification of coated rod electrodes for arc welding of unalloyed steel and fine-grained steel
Example Garant
| E |
42 |
2 |
- |
B |
4 |
2 |
H10 |
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
| 1 |
Short symbol for manual arc welding |
| 2 |
Code number |
Minimum yield strength*1 Re (N/mm2 ) |
Tensile strength Rm (N/mm2 ) |
Minimum elongation
after fracture A5 (%)
|
| 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 |
*1 Yield strength should be the lower yield point R. If it is not distinct then choose the 0.2 % - yield strength R.
|
| 3 |
Code letter / number |
Minimum charpy impact value 47 J bei °C |
| Z |
none |
| A |
+20 |
| 0 |
0 |
| 2 |
-20 |
| 3 |
-30 |
| 4 |
-40 |
| 5 |
-50 |
| 6 |
-60 |
| 4 |
Alloy short symbol |
Chemical composition |
| |
Mn |
Mo |
Ni |
| no short symbol |
2.0 |
- |
- |
| Mo |
1.4 |
0.3 - 0.6 |
- |
| Mn Mo |
> 1.4-2.0 |
0.3 - 0.6 |
- |
| 1 Ni |
1.4 |
- |
0.6 - 1.2 |
| 2 Ni |
1.4 |
- |
1.8 - 2.6 |
| 3 Ni |
1.4 |
- |
2.6 - 3.8 |
| Mn 1 Ni |
> 1.4-2.0 |
- |
0.6 - 1.2 |
| 1 Ni Mo |
1.4 |
0.3 - 0.6 |
0.6 - 1.2 |
| Z |
any other composition |
*2 if not determined: Mo<0.2; Ni<0.3; Cr<0.2; V<0.08; Nb<0.05; Cu<0.3; individual values are maximum values
|
| 5 |
Short symbol |
Coating type |
| A |
acid |
| C |
cellulose |
| R |
rutile |
| RR |
heavy-rutile *3 |
| RC |
rutile-cellulose |
| RA |
rutile-acid |
| RB |
rutile-basic |
| B |
basic |
*3 proportion coating diameter to core wire diameter 1.6
|
| 6 |
Short symbol |
Recovery (%) |
Type of current |
| 1 |
<105 |
AC, DC |
| 2 |
<105 |
DC
|
| 3 |
>105 - 125 |
AC, DC |
| 4 |
>105 - 125 |
DC
|
| 5 |
>125 - 160 |
AC, DC |
| 6 |
>125 - 160 |
DC
|
| 7 |
>160 |
AC, DC |
| 8 |
>160 |
DC
|
| 7 |
Short symbol |
Welding position |
| 1 |
all positions |
| 2 |
all positions, except vertical down |
| 3 |
butt weld in flat position fillet weld in flat and horizontal position |
| 4 |
butt weld and fillet weld in flat position |
| 5 |
fillet weld and acc. to code number 3
|
| 8 |
Code |
Maximum content of diffusible hydrogen (ml/100g melted weld metal) |
| H5 |
5 |
| H10 |
10 |
| H15 |
15 |
|
|