Best Gas For Mig Welding Sheet Metal

The best one to use is a mixture of 75 argon 25 carbon dioxide.

Best gas for mig welding sheet metal.

As for shielding gas a higher argon based gas is recommended. 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. Otherwise you may find a lot more splatter than you have imagined. When starting to learn auto body sheet metal welding with a mig welder you should opt for a shielding gas that has a higher proportion of argon gas.

While sheet metal is primarily a tig welding job there are times when it s handy to have an available mig welder to fuse sheet metal. It is better to avoid using a flux cored wire when welding sheet metals. Mig welding sheet metal. Mig welding gas for stainless steel welding welding of stainless steel is typically done with c2 or 2 carbon dioxide and 98 argon.

With these materials use a tri mix gas 90 helium 8 argon and 2 co 2. The best thing about argon is that it carries less heat than co2 which further results in less spatter. It s one of the highest quality machines available and comes incredibly low priced. Mig welding is the preferred method for most automotive bodywork and since sheet metal is the thinnest of metals a large expensive mig unit is usually not required.

The hobart handler 140 mig is the best affordable mig welder for sheet metal. Wires are compatible but for welding 316l stainless you need a 316l wire. For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. To weld sheet metal with solid wires use electrode positive ep or reverse polarity.

As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal. In some cases there is tri mix shielding gas containing 90 helium 7 5 argon and 2 5 carbon dioxide. The majority of the sheet metal welding i ve done was with a 90 amp 110 volt welder.