The hardness of martensite in quenched plain carbon steels reaches alm – McqOptions

MCQOPTIONS

1.	The hardness of martensite in quenched plain carbon steels reaches almost a saturation value of carbon of about
A.	0.20%
B.	0.40%
C.	0.60%
D.	1.40%
E.	None of the above
Answer» D.

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