The AC225S welder is Lincoln�Æs best selling Arc welder of all time. It has a broad welding amperage range of 40 to 225 A the AC-225 produces an extremely smooth AC Arc for welding a wide variety of materials including carbon£¬ low alloy£¬ and stainless steels as well as cast iron. Metals 16 gauge and heavier can easily be Arc welded with the AC-225. The AC-225 comes with a 3 year warranty on parts and labor. Manufactured under a quality system certified to ISO 9001 requirements.