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What Would Be an Acceptable Shielding Gas Mixture of Argon

Question 13

Multiple Choice

What would be an acceptable shielding gas mixture of argon (Ar) and oxygen (O) for GMA welds?

A) Ar + 2% O₂
B) Ar + 1% O₂
C) Ar + 7% O₂
D) Ar + 0% O₂

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