| 申请日期 | 2025-06-26 | 申请号 | JP2005062297 |
| 公开（公告）号 | JP4502126B2 | 公开（公告）日 | 2010-07-14 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | Sumitomo Metal Industries Ltd2118 | ||
| 简介 | PROBLEM TO BE SOLVED : To provide a steel for machine structure use having excellent hot forgeability, cold forgeability and rolling fatigue properties. ŽSOLUTION : The steel for machine structure use has a composition comprising 0.35 to 0.55% C, 0.05 to 1.0% Si, 0.4 to 1.5% Mn, ≤0.030% P, 0.005 to 0.050% S, 0 to 0.20% Cu, 0 to 0.20% Ni, 0 to 2.0% Cr, 0 to 1.0% Mo, 0 to 0.20% V, 0 to 0.10% Ti, 0 to 0.0050% B, 0.005 to 0.050% Al, 0.0005 to COPYRIGHT : (C)2006, JPO&NCIPI Ž | ||
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