Corrosion resistance of steel is increased by the addition of_________________?
Correct answer: B. Nickel and chromium
- A. Phosphorous and tungsten
- B. Nickel and chromium
- C. Lead and vanadium
- D. Molybdenum and tungsten
Explanation
Nickel and chromium improve steel’s resistance to oxidation and corrosion, with chromium forming a protective passive oxide film. This combination is characteristic of stainless steels.
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