ER 70S-4 welding wire

ER70S-4 is a kind of mild steel copper welding wire, suitable for CO2 gas protective welding.
1,ER70S-4 is a kind of mild steel copper welding wire, suitable for CO2 gas protective welding. With stable feasibility, good welding seams. Less spatter and excellent welding process properties.
2,Used for weld high tensile steel at 490N/mm2 grade, low current, usually used for steel 15,20
3,
Packaging
Wire Size
Spool Size
Net Weight
φ0.8~1.6(mm)
D100mm D200mm D270mm D300mm K300mm
1kg,5kg,15kg,18kg,20kg
chemical composition of welding wire(%)
C
Mn
Si
P
S
Cr
Ni
Cu
0.07~0.15
1.00~1.50
0.65~0.85
≤0.025
≤0.035
-
-
≤0.50
Mechanical Properties or Deposited Metal
Yield strengthσ
0.2
(Mpa)
Tensile strengthσ
b
(Mpa)
Elongationδ
5
(%)
AKV impact(J)
420
≥500
≥22
Not Specified
Wire Size(mm)
φ0.8
φ1.0
φ1.2
φ1.6
Welding position

Welding current(A)
40~140
50~220
80~350
120~450
Please be noted
Wire shall be stocked in dry.open the packs just when welding to avoid the wire rust.
Before welding please clean out the oil,rust,water etc from the work parts