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Probably but the results may not be acceptable. Keep in mind that companies spend a lot of money testing and experimenting with different types and mixtures of gasses to determine the best single or combinations to use. In MIG welding steel using Argon/CO2-75%/25% is recommended. In TIG welding (most metals) pure Argon is recommended.

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12y ago
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6mo ago

Yes, it is possible to weld mild steel using only CO2 gas as the shielding gas. CO2 can provide sufficient protection to prevent oxidation during the welding process. However, the quality of the weld may be lower compared to using a mixture of CO2 and argon, which can provide better weld bead appearance and reduced spatter.

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Q: Can you weld mild steel without argon just CO2?
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