Mig Welding Wire Size For Sheet Metal

Learn how to mig weld automotive sheet metal in about 5 minutes or less.

Mig welding wire size for sheet metal.

For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. Keep the stick out short stickout of your mig wire is important when welding any type of metal but especially sheet metal. The type of metal that you will be welding has a great influence on mig welder settings. I keep it short and to the point in this welding instructional video and show how ve.

The majority of the sheet metal welding i ve done was with a 90 amp 110 volt welder. Small wires also provide more control over the weld bead and a better chance of recovering from mistakes due to lower deposition rates. From automotive parts to fabricated structures shipbuilding metal buildings and sheet metal applications all have often reaped benefits from the switch to mig wire. The main reason to use a smaller diameter wire is that it takes less heat for melting and hence the metal around the weld is not heated to a very great extent.

Advantages include slag free welding with less clean up even in multiple pass operations. In addition mig requires lower operator skills levels than stick or tig. Mig welding sheet metal always use the smallest wire diameter possible since smaller wires take less heat to melt and heat the metal less. The material also determines the wire size and material as well as the gas needed.

The metals that can be welded with a mig machine can be grouped into three basic classifications. In this video we cover which size welding wire you should use when to change sizes and how to adjust your mig welder machine settings for different wires.