TIG Welder For Material Type Aluminum Mild Steel Stainless Steel Input Frequency 60 Hz Phase Single-Phase Polarity AC/DC Series Precision TIG 375 Stick Welding Maximum Output Current 420 A Stick Welding Minimum Output Current 2 A Stick Welding Output @ Duty Cycle 375 A @ 35 V 40 Percent TIG Welding Maximum Output Current 420 A TIG Welding Minimum Output Current 2 A TIG Welding Output @ Duty Cycle 375 A @ 35 V 40 Percent Welding Processes Stick Welding (SMAW) TIG Welding (GTAW)