The formation of oxide film on a metal due to atmospheric exposure reduces its____________?
Correct answer: B. Creep limit
- A. Toughness
- B. Creep limit
- C. Stiffness
- D. All A., B. & C.
Explanation
Oxide formation during atmospheric exposure can impair high-temperature strength by reducing the creep limit. Stiffness is not normally changed significantly by a surface oxide film, so 'all' is not appropriate.
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