Stainless steel is welded using__________________?
Correct answer: B. Inert gas arc welding
- A. Oxy-acetylene flame
- B. Inert gas arc welding
- C. Arc welding
- D. Oxy-hydrogen flame
Explanation
Inert-gas arc welding, especially TIG or MIG variants, protects the molten stainless steel from atmospheric contamination and helps prevent oxidation and porosity. Oxy-fuel flames are less suitable because stainless steel is sensitive to oxidation and heat-related surface damage.
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