Elinvar, an alloy used in precision instruments, hair springs for watches, etc. contains the following element as principal alloying element
A. Iron
B. Copper
C. Aluminium
D. Nickel
Answer: Option D
Solution(By Examveda Team)
Elinvar is a nickel-iron alloy notable for having a modulus of elasticity which does not change much with temperature changes.Elinvar originally consisted of 52% iron, 36% nickel, and 12% chromium.
It is almost non-magnetic, and corrosion resistant.
This Question Belongs to Mechanical Engineering >> Engineering Materials
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