| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a case-hardening steel which is excellent in cold-workability, which restrains excessive carburizing without depending on the heat-treatment condition of the carburizing and which has the high fatigue-resistant characteristic after treatment of carburizing. <P>SOLUTION: This steel has the component-composion including, by mass%, 0.10-0.35% C, 0.01-0.50% Si, 0.40-1.50% Mn,≤0.02% P,≤0.03% S, 0.04-0.10% Al, 0.5-2.5% Cr, 0.002-0.035% Sb, 0.0005-0.0050% B,≤0.003% Ti and <0.0080% N and the balance Fe with inevitable impurities. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
