AWS ER70S-3 Welding Wire

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