AWS ER70S-3 Welding Wire
1. Description
AWS ER70S-3 Welding Wire is 450-500MPa grade carbon steel with copper plating gas shielded welding wire, using rich argon welding, it has excellent welding performance, stable arc, less spatter and weld moulding beauty, good hot metal flow, excellent crack resistance. Especially suitable for low current high speed welding of thin plate.
2. Application
AWS ER70S-3 Welding Wire is carbon steel-grade low alloy steel of 450-500MPa strength, such as single-channel or multi-channel, butt or corner welding of Bridges, vehicle buildings, pipelines, etc.
3.Typical Chemical Composition
C
Mn
Si
S
P
Cu
Cr+Ni+Mo+V
norm
0.06-0.15
0.9-1.4
0.45-0.75
≤0.035
≤0.0025
≤0.5
≤0.5
e.g.
0.074
0.98
0.51
0.012
0.008
0.11
0.057
4. Mechanical Properties
ReH (MPa)
Rm (MPa)
A5 (%)
-20℃ KV2 (J)
norm
≥390
490-670
≥18
≥27
e.g.
425
535
31
120
5. Reference Current(DC+)
Welding diameter(mm)
0.6
0.8
0.9
1.0
1.2
1.6
Welding
current(A)
40-120
40-140
40-180
50-220
80-350
120-550
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