TIG Welder For Material Type Aluminum Specialty Metals Stainless Steel Steel For Maximum Material Thickness 5/8 in (Aluminum) 5/8 in (Stainless Steel) 5/8 in (Steel) For Minimum Material Thickness 0.012 in (Stainless Steel) 0.012 in (Steel) 0.015 in (Aluminum) Input Frequency 50/60 Hz Max Input Current 36 A @ 208V AC (Three-Phase) 52 A @ 208V AC (Single-Phase) Phase Single-/Three-Phase Polarity AC/DC Series Dynasty 400 Stick Welding Maximum Output Current 400 A