RD WLDG 1/8IN MILD STL 10LBertical and overhead positions; light slag allows for easy clean-up; excellent for rusty steel because of the strong arc force; useful for galvanized tanks, steel casting and pressure pipe. Recommended polarity: AC, DCEP, DCEN (Either Polarity). Tensile Strength (PSI): 88,000. Amperage: 25-75 on sku #s (890.9665, 890.9673, 890.9681) Amperage: 35-125 on sku #s (890.9707, 890.9715, 890.9723) Amperage: 50-160.