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What Shielding Gas For Mig Welding Stainless Steel. This gas can still compromise the corrosion resisting properties to some extent. For stainless steel metal the recommended shielding gas mixture is a combination of helium 90 argon 75 and carbon dioxide 25.
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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. MIG welding utilizes shielding gas that helps define the characteristics of the welding arc. 75 Argon 25 Carbon Dioxide 7525 90 Argon 10 Carbon Dioxide 9010 95 Argon 5 Oxygen 955 And many other mixtures.
In some cases there is tri-mix shielding gas containing 90 Helium 75 Argon and 25Carbon dioxide.
Stainless steel can be welded using different welding methods. When you require extra-low carbon content in the weld use argon with 1 to 2 percent oxygen. C5 or 5 Carbon Dioxide and 95 Argon. You can either choose from.
