It is used for welding of carbon steel and low-alloy steel with CO2 or mixed gas as protection gas during electric-arc welding.

Applications

The gas-protection welding wire is widely used for the welding of steel structures in the fields of coal mine machinary, construction machinary, ships, bridges, pressure vessels as well as building constructions. It is also used for the welding of 500Mpa carbon steel and low alloy steel and the high-speed welding of steel sheet and pipe line.

Chemical proporties

Spec.	C	Mn	Si	P	S	Ni	Cr	Cu	Mo	Ti	V	Al	Zr
ER70S-7	0.09	1.89	0.78	0.016	0.013	0.017	0.008	0.16
ER70S-2	0.05	1.21	0.62	0.010	0.013	0.06	0.03	0.16	0.02	0.08	0.007	0.007	0.08
ER70S-3	0.09	1.05	0.65	0.014	0.013	0.02	0.017	0.17	0.004		0.003
ER70S-6	0.08	1.51	0.89	0.015	0.013	0.016	0.021	0.18	0.006		0.003

Mechanical perpormances

Spec.	Tensile strength Rm	Yield strength Rel/ Rp0.2	Elongation(%)	Impact strength(J)	Protection gas
ER70S-7	542	423	29	138(room temperature)	CO2
ER70S-2	572	465	27	89(-39°C)	80%Ar+20% CO2
ER70S-3	520	437	29	116(-20°C)	CO2
ER70S-6	545	452	29	91(-30°C)	CO2

Package: wind on plastic plate with 5kg, 15kg, 20kg and packed in carton.

Gas protection welding wire