Excellent carburizing steel components in low cycle bending fatigue strength

摘要

PROBLEM TO BE SOLVED: To provide a carburized steel component more excellent in low-cycle bending fatigue strength than heretofore.;SOLUTION: The carburized steel component contains a steel having a chemical composition comprising, by mass, 0.1-0.6% C, 0.01-1.5% Si, 0.3-2.0% Mn, ≤0.02% P, 0.001-0.15% S, 0.001-0.03% N, 0.001-0.06% Al, ≤0.005% O, and the balance Fe with inevitable impurities, and is subjected to carburizing, quenching and tempering treatments. The steel component has the surface hardness of HV550 to HV800, and the core hardness of HV400 to HV500.;COPYRIGHT: (C)2011,JPO&INPIT