Elinvar, an alloy used in precision instruments, hair springs for watches, etc. contains the following element as principal alloying element

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VideRime Staff asked 5 years ago

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

Engineering Materials Practice Set-1