Welding Co2 Or Argon. MAG welding is where the introduction of reactive gases such as carbon dioxide CO2 or oxygen plays an important role to provide a faster travel speed and higher metal deposition rates from the higher arc temperatures. Above 01 CO2 in percentage levels they secure the weld soundness.
The higher the CO2 content the broader the penetrations shape at similar penetration depth. You can just use a pub regulator for the co2 bottle. Co2 is an active gas and is used mostly for penetration.
Both carbon and oxygen react with the stainless steel in the heat of the arc resulting in some oxidation and reduction in corrosion resistance.
To achieve a good X-ray quality of the welded carbon steel CO2 contents above 5 are necessary. Using 100 co2 makes the weld pool hotter and you get better penetration. MAG welding is where you use 100 co2 as a Sheilding gas instead of 7525 argonco2 mix. MAG welding is where the introduction of reactive gases such as carbon dioxide CO2 or oxygen plays an important role to provide a faster travel speed and higher metal deposition rates from the higher arc temperatures.