| 摘要 |
PROBLEM TO BE SOLVED: To provide a graphite steel improved in induction hardenability by refining graphite grain size. SOLUTION: The graphite steel has a composition consisting of, by weight, 0.10-1.0% C, 0.1-2.0% Si, 0.10-1.50% Mn, <=0.2% P, 0.001-0.50% S, 0.001-0.1% Al, 0.0002-0.02% N, and the balance Fe with inevitable impurities and also has graphite of <=7.0×(C(%))<1/3>μm average grain size.
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