Q.

Which family of steels are referred to as chromoly?

A. 40xx
B. 41xx
C. 43xx
D. 44xx
Answer» B. 41xx
Explanation: the family of 41xx steel is usually called as chromoly or chrome-moly due to its primary alloying elements, chromium and molybdenum. steels such as 4130 and 4140 are generally used for bicycle frames, and as parts of firearms, flywheels etc.
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