发明申请
US20050058567A1 Lead-free steel for machine structural use with excellent machinability low strength anisotropy
失效
机械结构用无铅钢，具有优良的机械加工性低强度各向异性
- 专利标题： Lead-free steel for machine structural use with excellent machinability low strength anisotropy
- 专利标题（中）： 机械结构用无铅钢，具有优良的机械加工性低强度各向异性
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申请号： US10912229申请日： 2004-08-06
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公开(公告)号： US20050058567A1公开(公告)日： 2005-03-17
- 发明人: Naoki Iwama , Susumu Owaki , Masao Uchiyama , Isao Fujii , Syoji Nishimon , Norimasa Tsunekage , Kazuhiro Kobayashi , Motohide Mori , Kazutaka Ogo , Kunio Naito
- 申请人： Naoki Iwama , Susumu Owaki , Masao Uchiyama , Isao Fujii , Syoji Nishimon , Norimasa Tsunekage , Kazuhiro Kobayashi , Motohide Mori , Kazutaka Ogo , Kunio Naito
- 申请人地址： JP Hyougo-ken 672-8677
- 专利权人： SANYO SPECIAL STEEL CO., LTD.
- 当前专利权人： SANYO SPECIAL STEEL CO., LTD.
- 当前专利权人地址： JP Hyougo-ken 672-8677
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C22C38/04 ; C22C38/18 ; C22C38/24 ; C22C38/38 ; C22C38/42 ; C22C38/44 ; C22C38/46 ; C22C38/58 ; C22C38/60
摘要：
A lead-free steel for machine structural use with excellent machinability and low strength an isotropy, which does not contain Pb and is equal to or higher than a conventional D Pb-containing free cutting steel in properties, is provided. This steel includes, on the weight basis, C: 0.10 to 0.65%; Si: 0.03 to 1.00%; Mn: 0.30 to 2.50%; S: 0.03 to 0.35%; Cr: 0.1 to 2.0%; Al: less than 0.010%; Ca: 0.0005 to 0.020%; Mg: 0.0003 to 0.020%; 0: less than 20 ppm; and the balance being Fe and inevitable impurities.
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