Welder Red Seal · Question
Which of the following elements is primarily responsible for the corrosion resistance of stainless steels?
Chromium is the primary alloying element that provides stainless steels with their corrosion resistance by forming a passive, self-healing oxide layer on the su
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Question: Which of the following elements is primarily responsible for the corrosion resistance of stainless steels?
Answer options:
- Nickel
- Manganese ✅ Chromium
- Molybdenum
Correct answer: Chromium
Explanation: Chromium is the primary alloying element that provides stainless steels with their corrosion resistance by forming a passive, self-healing oxide layer on the surface. While nickel enhances ductility and improves corrosion resistance in some environments, and molybdenum increases pitting corrosion resistance, chromium is foundational to the 'stainless' property.
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