专利检索 ap:("von Moos Stahl AG") AND inv:"ROELOFS, Hans" 第 1 页

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发明公开
EINSATZSTAHL UND VERFAHREN ZUR HERSTELLUNG MIT SCHMELZBEHANDLUNG 审中-公开
标题翻译： EINSATZSTAHL和方法与熔融处理PRODUCING

公开(公告)号：EP1784519A2

公开(公告)日：2007-05-16

申请号：EP05773330.5

申请日：2005-08-26

申请人： von Moos Stahl AG

发明人： ROELOFS, Hans , URLAU, Ulrich , KUHNEMUND, Martin

IPC分类号： C22C38/12 , C22C38/60 , C22C38/00 , C21C7/076

CPC分类号： C22C38/18 , C21C7/076 , C22C38/02 , C22C38/04 , Y02P10/242

摘要： The invention relates to a case hardened steel which comprises, in weight percent, 0.14 to 0.23 % of carbon, 0.2 to 0.4 % of silicon, 0.6 to 1.7 % of manganese, up to 0.035 % of phosphorus, up to 1.5 % of nickel, 0.7 to 1.7 % of chromium, up to 0.5 % of molybdenum, up to 0.04 % of titanium and 0.01 to 0.02 % of nitrogen and other additives conventionally used for steel. The steel also comprises, in weight percent, 0.02 to 0.06 % of niobium, preferably 0.04 to 0.06 % of niobium, and an oxygen content of 40 to 70 ppm and an aluminum content of 100 ppm.