Welding 22 Gauge Sheet Metal. 60 amp 40pps 30 peak 30 background. As a rule when MIG welding sheet metal never use a body filler metal that is thicker than the base metal.
The problem with welding sheet metal or thin gauge steel is that you can easily blow holes in the panel and create a big mess quickly. Stainless steelare used in applications such as HVAC automotive mobile machinery guards and cabs and small parts as well as stainless steel food service and processing. The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
It is recommended that a welder should use 023- or 024-inch wire for light gauge sheet metal work.
You tack in the panel or patch. However if you are dealing with materials that are 18-gauge or thicker one should be able to use 030-inch welding wire. For 332 7018s its about the same. Dont simply run a bead across the whole joint work slowly into different.