Washington Alloy Co. USA 70S-4

Specifications AWS A5.18 Class ER70S-4 Description USA 70S-4 has a higher content of manganese and silicon than USA 70S-3. This gives it greater weld metal strength and good quality weld deposits in semi-killed or rimmed steels. This wire may be used with CO2, Argon-Oxygen mixtures, or mixtures of the two. USA 70S-4 has excellent fluidity and wettability resulting in a very smooth bead contour on butt and fillet welds. This wire can be used on all CO2 semi-automatic and automatic equipment. Applications Joining structural steels, piping, ship steels, machinery, bridges, electric products, boiler and pressure vessel A515 in stress relieved conditions.