Best Shielding Gas For Mig Welding. This is because it gives a nice finish and is composed of 25 Carbon and 75 Argon. The term inert means they do not react to anything unlike non inert gasses like oxygen that will cause metal to rust.
Aluminum is non-ferrous metal and therefore you should only use 100 argon as the shielding gas. When you weld with a solid wire this is accomplished with a Shielding Gas. The gasses used are what shield the weld from the air that causes weld defects such as porisity.
Argon or argonhelium mixtures can be used for welding all grades.
Its not the cheapest of gas mixes but its well liked because it gives you the person MIG welding at home a nice balance between cost and attractiveness of. Argon or argonhelium mixtures can be used for welding all grades. It is used in both TIG and MIG welding. I was asking the local Miller dealer what was the best gas mix to use when welding on car parts and pieces.