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Welder Red Seal · Question

Which of the following gases is commonly used as a plasma gas for cutting stainless steel to achieve a dross-free cut and good surface finish?

Nitrogen is a common plasma gas for cutting stainless steel as it provides a clean, dross-free cut and good surface finish. Oxygen is typically used for mild st

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Question: Which of the following gases is commonly used as a plasma gas for cutting stainless steel to achieve a dross-free cut and good surface finish?

Answer options:

  • Oxygen
  • Shop air ✅ Nitrogen
  • Propane

Correct answer: Nitrogen

Explanation: Nitrogen is a common plasma gas for cutting stainless steel as it provides a clean, dross-free cut and good surface finish. Oxygen is typically used for mild steel, and shop air is a versatile, less expensive option for various metals but may not produce the best finish on stainless.

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