MIG Welder Series Millermatic 355 Phase Single-/Three-Phase Welding Mode CV Polarity DC Input Frequency 50/60 Hz Welding Processes Flux-Cored Welding (FCAW) MIG Welding (GMAW) For Wire Type Flux-Cored Metal Core Solid Maximum Wire Diameter 0.045 in (Flux-Cored) 0.045 in (Solid Steel) 0.047 in (Aluminum) 0.047 in (Stainless Steel) 0.052 in (Metal Cored) Maximum Wire Feed Speed 800 in/min MIG Welding Output @ Duty Cycle 310 A @ 24 V 60 Percent