MAGNESIUM ALLOYS FORM refractory surface oxides similar to aluminum alloys. Alternating current GTAW is typically used for welding of magnesium alloys because of the oxide cleaning action it provides. DCEP may be used for welding thicknesses less than 3/16 in. (5 mm) while alternating current provides better penetration for greater thicknesses. Argon provides the best quality welds, but helium or mixtures of the two are also used.
Pure tungsten, ceriated, and zirconiated electrodes may be used.
MAGNESIUM ALLOYS FORM refractory surface oxides similar to aluminum alloys. Alternating current GTAW is typically used for welding of magnesium alloys because of the oxide cleaning action it provides. DCEP may be used for welding thicknesses less than 3/16 in. (5 mm) while alternating current provides better penetration for greater thicknesses. Argon provides the best quality welds, but helium or mixtures of the two are also used. Pure tungsten,
ceriated, and zirconiated electrodes may be used.