Invention Grant
- Patent Title: Precipitation hardenable martensitic stainless steel and steam turbine blade using the same
- Patent Title (中): 沉淀硬化马氏体不锈钢和蒸汽轮机叶片使用相同
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Application No.: US13086416Application Date: 2011-04-14
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Publication No.: US08747733B2Publication Date: 2014-06-10
- Inventor: Shinji Oikawa , Hideo Yoda , Masahiko Arai , Hiroyuki Doi
- Applicant: Shinji Oikawa , Hideo Yoda , Masahiko Arai , Hiroyuki Doi
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2010-094530 20100416
- Main IPC: C22C38/44
- IPC: C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/50 ; F01D5/14
Abstract:
A precipitation hardenable martensitic stainless steel excellent in the stability of martensite, having the high strength, high toughness and high corrosion resistance is provided. The precipitation hardenable martensitic stainless steel contains at a mass rate, C: 0.05-0.10%, Cr: 12.0-13.0%, Ni: 6.0-7.0%, Mo: 1.0-2.0%, Si: 0.01-0.05%, Mn: 0.06-1.0%, Nb: 0.3-0.5%, V: 0.3-0.5%, Ti: 1.5-2.5%, Al: 1.0-2.3%, and the remainder consisting of Fe and an unavoidable impurity.
Public/Granted literature
- US20110255988A1 PRECIPITATION HARDENABLE MARTENSITIC STAINLESS STEEL AND STEAM TURBINE BLADE USING THE SAME Public/Granted day:2011-10-20
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