发明授权
US07195736B1 Lead-free steel for machine structural use with excellent machinability and low strength anisotropy
失效
机械结构用无铅钢，具有优良的机械加工性和低强度各向异性
- 专利标题： Lead-free steel for machine structural use with excellent machinability and 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和低强度各向异性
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申请号： US10182714申请日： 2000-02-10
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公开(公告)号： US07195736B1公开(公告)日： 2007-03-27
- 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 Himeji
- 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 Himeji
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 国际申请： PCT/JP00/00775 WO 20000210
- 国际公布： WO01/59170 WO 20010816
- 主分类号： C22C38/18
- IPC分类号： C22C38/18
摘要：
A lead-free steel for machine structural use with excellent machinability and low strength anisotropy, which does not contain Pb and is equal to or higher than a conventional 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%; O: less than 20 ppm; and the balance being Fe and inevitable impurities.
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