Q206
Which of the following material has nearly zero coefficient of expansion?
A.
Stainless steel
B.
High speed steel
C.
Invar
AnswerD.
Heat resisting steel
Answer: Option C
Solution
Answer: Option C
Solution:
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.