发明授权
- 专利标题： Austenitic, non-magnetic, stainless steel alloy
- 专利标题（中）： 奥氏体，非磁性，不锈钢合金
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申请号： US935116申请日： 1986-11-26
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公开(公告)号： US4818484A公开(公告)日： 1989-04-04
- 发明人: Terry A. DeBold , John H. Magee, Jr. , Norman B. Schmidt
- 申请人： Terry A. DeBold , John H. Magee, Jr. , Norman B. Schmidt
- 申请人地址： PA Reading
- 专利权人： Carpenter Technology Corporation
- 当前专利权人： Carpenter Technology Corporation
- 当前专利权人地址： PA Reading
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C22C38/44
摘要：
A large, austenitic, non-magnetic, stainless steel, alloy article which has been significantly warm worked between about 1500 F. and 1650 F. but not subsequently annealed, which has a 0.2% yield strength of at least about 90 ksi, and which, when formed into a U-bend, does not undergo stress corrosion cracking within about 700 hours in boiling saturated aqueous sodium chloride containing 2 weight percent (w/o) ammonium bisulfite. The alloy of the article consists essentially of about:______________________________________ Elements w/o ______________________________________ C 0.1 Max. Mn 1-11 Si 0.6 Max. Cr 18-23 Ni 14-25 Mo 2.5-6.5 Cu 2 Max. B .01 Max. N 0.15 Min. C + N .gtoreq. ##STR1## ______________________________________ and the balance is essentially iron. A preferred alloy for this article contains about:______________________________________ Elements w/o ______________________________________ C .02 Max. Mn 3.0-9.0 Si 0.5 Max. Cr 18-23 Ni 15-22 Mo 2.5-6.5 N 0.20 Min. 3 Mo + Cr .gtoreq. 29.5 ______________________________________
公开/授权文献
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