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Which of the following material has nearly zero coefficient of expansion?

A. Stainless steel

B. High speed steel

C. Invar

D. Heat resisting steel

Answer: Option C

Solution(By Examveda Team)

Invar is a solid solution, it is a single-phase alloy,
It consisting of around 36% nickel and 64% iron.
And uniquely it has nearly zero coefficient of expansion.

This Question Belongs to Mechanical Engineering >> Engineering Materials

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