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

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A. 0.01 to 0.10
B. 0.2 to 0.4
C. 0.5 to 0.7
D. 0.8 to 1.0

1 Answer

answered by
B. 0.2 to 0.4

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