Steel for machine structural use having improved machinability
    5.
    发明申请
    Steel for machine structural use having improved machinability 审中-公开
    机械结构用钢具有改善的机械加工性

    公开(公告)号:US20050191203A1

    公开(公告)日:2005-09-01

    申请号:US10930738

    申请日:2004-08-31

    IPC分类号: C22C38/00 C22C38/60

    摘要: Disclosed is a steel for machine structural use which is usable instead of Pb (lead) free-machining steel, has no adverse effect on environment, and can be stably machined. This steel for machine structural use comprises by mass carbon (C): 0.10 to 0.60%, silicon (Si): 0.05 to 1.0%, manganese (Mn): 0.3 to 2.0%, sulfur (S): 0.02 to 0.25%, aluminum (Al): 0.002 to 0.030%, and calcium (Ca): 0.0005 to 0.01%, with the balance consisting of iron (Fe) and unavoidable impurities, the steel satisfying Ca/Al ratio=0.1 to 1.0 in terms of % by mass ratio.

    摘要翻译: 公开了一种机械结构用钢,其可用于代替Pb(铅)自由加工钢,对环境没有不利影响,并且可以被稳定地加工。 这种机械结构用钢由碳质量(C):0.10〜0.60%,硅(Si):0.05〜1.0%,锰(Mn):0.3〜2.0%,硫(S):0.02〜0.25% (Al):0.002〜0.030%,钙(Ca):0.0005〜0.01%,余量由铁(Fe)和不可避免的杂质构成,以质量%计,Ca / Al比= 0.1〜1.0 比。