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Welding Standards

Unalloyed Rod Electrodes acc. to DIN 1913

Rod electrodes for joint welding of unalloyed and low-alloyed steel
 
Example Kontakt 160
 
E 51 3 3 RR 11 160
1 2 3 4 5 6 7
 
 
1 Short symbol for manual arc welding
 
2 Code number
Minimum
yield strength1
Re (N/mm2 )

Tensile strength
Rm (N/mm2 )

Minimum elongaltion
after fracture A5 (%)
43 355 430 - 550 22
51 380 510 - 650 22
 
3 Code number Minimum charpy impact value 28 J at °C
0 not specified
1 +20
2 0
3 -20
4 -30
5 -40
 
4 Code number Minimum charpy impact value 47 J at °C
0 not specified
1 +20
2 0
3 -20
4 -30
5 -40
 
5 Short symbol Coating type
A acid
R rutile (thin or medium-thick)
RR rutile (thick)
AR rutile-acid (mixed type)
C cellulose
R (C)
rutile-cellulose (medium-thick)
RR (C) rutile-cellulose (thick)
B basic
B (R) basic with non-basic portions
RR (B) rutile-basic (thick)
 
6 Code number Type Welding position*1 Welding Current
Code*2
Coating Thickness
According 
to Core Wire
Diameter (%)

2 A2
R2
1
1
5
5
<120
3 R3
R(C)3
2(1)
1
2
2
>120 - 155
4 C4 1 0+(6)
>120 - 155
5 RR5
RR(C)5
2
1
2
2
>155 - 165
6 RR6
RR(C)6
2
1
2
2
>165
7 A7
AR7
RR(B)7
2
2
2
5
5
5
>155
8 RR8
RR(B)8
2
2
2
5
>155
9 B9
B(R)9
1
1
0+(6)
6
>155
10 B10
B(R)10
2
2
0+(6)
6
>155
11 RR11
AR11
4(3)
4(3)
5
5
>155
12 B12
B(R)12
4(3)
4(3)
0+(6)
0+(6)
>155
 
7 Code number
Recovery
120 115 < 125%
140 135 < 145%
160 155 < 165%
180 175 < 185%
200 195 < 205%
 


*1 Code Number for Welding Position

Code Number
Welding Positions Reference Letter According toDIN 1912 Part 2
1 all positions w h hü s f q ü
2 all positions except vertical down w h hü s q ü
3 butt weld, flat position
fillet weld, flat position
fillet weld, hotizontal position
w
w
h
4 butt weld, flat position
fillet weld, flat position
w
w
 

*2 Code Number for Welding Current Code

DC or AC Only DC
Open Circuit at AC
Min. Voltage
50 70 80
Code Number
Welding Electrode's
Polarity
1 4 7 0 any polarity
2 5 8 0- negative
3 6 9 0+ positive
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