Gas Pressure For Aluminum Mig Welding. Ad Find China Manufacturers Of Mig Welding. Aluminum MIG Weld done with Argon gas.
Because aluminum is a non-ferrous metal it requires a 100 percent argon shielding gas. For ¾ inch 30-40 CFH should be enough. This choice requires you to replace regulators designed for CO2 but you dont have to buy new hoses.
The thickness of electrode plays a critical role in welding aluminum.
You will get your desired result in this gas pressure. Typical gas flow when MIG welding varies for different inside nozzle diameters. Like shovelon stated your flow is adjusted for your apllication and equipment. If you have a small mig machine less than 250 amps start at 15cfh and adjust from there.