What Is The Correct Shielding Gas For Mig Welding Stainless Steel. Therefore the recommended shielding gas to use for short circuit stainless steel MIG welding is a tri-mix shielding gas such as 90He75Ar25CO2. Tri-Mix Gas 90 Helium 75 Argon and 25Carbon dioxide.
As I said earlier argon requires a higher flow rate and the recommended flow rate to be used on aluminum is 20 to 30CFH. An important factor or the most important when choosing the correct shielding gas mix is that stainless steel has a sluggish weld bead. Thus when using the short circuit transfer method a tri-mix shielding gas of 90He75Ar25CO2 is recommended.
Aluminum is non-ferrous metal and therefore you should only use 100 argon as the shielding gas.
Shielding gases for MIGGMAW welding The basic gas for MIGMAG welding is argon Ar. FLOW RATE FOR ALUMINUM MIG WELDING Aluminum has an interesting property that requires a specific gas to be used while welding. An important factor or the most important when choosing the correct shielding gas mix is that stainless steel has a sluggish weld bead. If you want a one-size-fits-all option a MIG welding shielding gas with a 7525 mix of argon and CO2 is likely going to be your best bet.