1.

HS6 – 5 – 2 – 5 indicates high-speed steel containing:

A. Mo = 6%, W = 5%, V = 2%, Co = 5%
B. W = 6%. Mo = 5%, V = 2%, Co = 5%
C. Mo = 6%, V = 5%, W = 2%, Co = 5%
D. Co = 6%, Mo = 5%, V = 2% , W = 5%
Answer» C. Mo = 6%, V = 5%, W = 2%, Co = 5%


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