Welding Gas For Aluminum Mig. When it comes to welding aluminum the gas choices and electrode choices are pretty simple. MIG Welding Gas for Aluminum Welding.
Choose the right gas. This choice requires you to replace regulators designed for CO2 but you dont have to buy new hoses. The typical gas pressure when welding with MIG tends to be around 3 to 8 psi this is very low compared to other types of welding.
But if you are planing on welding thicker pieces of aluminum 12 or more 25 to 75 helium should be added for deeper penetration to be achieved.
Flow rates of 20 to 30 cubic feet per hour are recommended. Stainless Steel MIG weld done with C2 gas. For most other MIG welding applications especially for. Choose the right gas.