Magnesium Alloy Welding Parameters

Recommended Tungsten Electrodes and Gas Cups for Various Welding Currents

Electrode Use Gas Cup I.D. Direct Current, A Alternating Current, A
in. mm Straight Polarity in. Reverse Polarity DCEN Unbalanced Wave Balanced Wave
0.010 0.25 1/4 up to 15 -- up to 15
0.020 0.50 1/4 5-20 -- 5-15
0.040 1.00 3/8 15-80 -- 10-60
1/16 1.6 3/8 70-150 10-20 50-100
3/32 2.4 1/2 150-250 15-30 100-160
1/8 3.2 1/2 250-400 25-40 150-210
5/32 4.0 1/2 400-500 40-55 200-275
3/16 4.8 5/8 500-750 55-80 250-350
1/4 6.4 3/4 750-1100 80-120 325-450

a. All values are based on the use of argon as the shielding gas. b. Use EWTh-2 electrodes. c. Use EWP electrodes.