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An austenitized 70 mm diameter 4340 steel bar is quenched in agitated H2O. Predict what the...

An austenitized 70 mm diameter 4340 steel bar is quenched in agitated H2O. Predict what the Rockwell C hardness of the bar will be at (a) its surface, (b) 3/4-R, (c) midway between its surface and center and (d) at its center

(a) S: _53_____                      (b) 3/4R: __52_____ (c) MR: __52_____      (d)

C: __51____

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samet mamat answered 2 years ago
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