Gas shielded, deposits C - 1.3% Mn weld metal for mild and medium tensile steels. Copper coated, double deoxidised with manganese and silicon with good mechanical properties. For use with CO2 and AR-CO2. Made to BS 2901/1 : 1983 A18 & BS EN 440 G3 Si1. For welding mild steel and C-Mn steel.