TIG Welder For Material Type Aluminum Metal Stainless Steel Steel For Maximum Material Thickness 1 in (Aluminum) 1 in (Steel) For Minimum Material Thickness 1/50 in (Aluminum) 1/50 in (Steel) Input Frequency 50/60 Hz Max Input Current 800 A Phase Single-/Three-Phase Polarity AC/DC Series Dynasty 800 Stick Welding Maximum Output Current 500 A (Single-Phase) 800 A (Three-Phase) Stick Welding Minimum Output Current 5 A (Single-Phase) 5 A (Three-Phase)