ESAB Tradestig AC/DC 180 is a fan cooled power source providing both AC and DC current outputs for use in Tungsten Inert Gas (TIG) or Manual Metal Arc (MMA) welding processes. In the TIG - DC welding mode, the unit may be used to weld stainless steel, copper and its alloys and nickel and its alloys. In the TIG - AC mode good quality welds may be produced in aluminium and its alloys. MMA - AC or DC is used for the welding of most ferrous or non-ferrous metals using covered electrodes.