... cored wireStandare cited:ER70S-6Declaration:ER70S-6 is a mild steel copper coated welding wire suitable for 100% CO2 and argon ... ,and excellent welding process properties.Application:Used to weld ship building steel(A,B,D,E,A36,D36,E36)and equive lant ... mild steel for 550 Mpa grade mild alloy steel,such as container building,vechiles,construction machine,rail way ...