Maximum change in the hardness of martensite occurs in the carbon content range of _____________ percent in steel?

Maximum change in the hardness of martensite occurs in the carbon cont

1.	Maximum change in the hardness of martensite occurs in the carbon content range of _____________ percent in steel?
A.	0.01 to 0.10
B.	0.2 to 0.4
C.	0.5 to 0.7
D.	0.8 to 1.0
Answer» C. 0.5 to 0.7

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Maximum change in the hardness of martensite occurs in the carbon content range of _____________ percent in steel?

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