Harris Bronze A2 GTAW Aluminum Welding TIG Rod 1 8 36in. 10LB Box 3ALB260 81Ni1C H Plus ) Mode 18–22 gauge thin 702250000E ) Mode 18–22 gauge thin sheet (panels) 16–18 V 150–200 IPM 80–110 A Short circuit 16–18 gauge structural sheet 18–21 V 200–260 IPM 110–140 A Short circuit Lap fillet on 14 gauge 21–23 V 240–290 IPM 130–160 A SC or transition Cast iron cosmetic repair 17–20 V 180–240 IPM 100–130 A Short circuit Copper joining (14 gauge) 19–22 V 200–270 IPM 120–150 A Short circuit The key variable is shielding gas purity Harris General Purpose Regulator Model 401C 050 580 A 401C050580A Harris Aluminum Bronze A2 TIG GTAW Welding Rod 1 8 36in 7 & ASME SFA 5