A cylindrical piece of steel 57 mm (21 4 in.) in diameter
Chapter 11, Problem 11.D7(choose chapter or problem)
A cylindrical piece of steel 57 mm (21 4 in.) in diameter is to be austenitized and quenched such that a minimum hardness of 45 HRC is to be produced throughout the entire piece. Of the alloys 8660, 8640, 8630, and 8620, which qualifies if the quenching medium is (a) moderately agitated water or (b) moderately agitated oil? Justify your choice(s).
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