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Welding Gas For Mig Stainless Steel. Check the wire before use. C25 or 25 Carbon Dioxide and 95 Argon.
The tri-mix shielding gas that has been brought up is the most suitable choice for MIG welding stainless steel. The gas gives the most desirable bead contour while keeping the CO2 level low enough so that it does not influence the corrosion resistance of the metal. 90 Helium 75 Argon 25 Carbon Dioxide.
Trim the wire inside the gun tip making sure it is not too long.
C2 or 2 Carbon Dioxide and 98 Argon. Alternative gases that you can use are 98 Argon and 2 Co2 or 98 argon and 2 oxygen mix. The mixture provides benefits including an increased amperage for quicker welds without the undesired more extreme heat. Choose The Right Shielding Gas.