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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
 
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