Invention Grant
- Patent Title: Heat-resistance ferritic stainless steel
- Patent Title (中): 耐热铁素体不锈钢
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Application No.: US12664705Application Date: 2009-03-05
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Publication No.: US09279172B2Publication Date: 2016-03-08
- Inventor: Yasushi Kato , Norimasa Hirata , Tetsuyuki Nakamura , Takumi Ujiro , Hiroki Ota
- Applicant: Yasushi Kato , Norimasa Hirata , Tetsuyuki Nakamura , Takumi Ujiro , Hiroki Ota
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JP2008-057518 20080307
- International Application: PCT/JP2009/054706 WO 20090305
- International Announcement: WO2009/110640 WO 20090911
- Main IPC: C22C38/20
- IPC: C22C38/20 ; C22C38/22 ; C22C38/26 ; C22C38/28 ; C22C38/06 ; C22C38/02 ; C22C38/04 ; C22C38/00 ; C22C38/24 ; C21D6/00

Abstract:
Ferritic stainless steel is excellent in terms of both oxidation resistance and thermal fatigue resistance without adding expensive elements, such as Mo or W. The ferritic stainless steel, contains: C: 0.015 mass % or lower, Si: 1.0 mass % or lower, Mn: 1.0 mass % or lower, P: 0.04 mass % or lower, S: 0.010 mass % or lower, Cr: 16 to 23 mass % or lower, N: 0.015 mass % or lower, Nb: 0.3 to 0.65 mass %, Ti: 0.15 mass % or lower, Mo: 0.1 mass % or lower, W: 0.1 mass % or lower, Cu: 1.0 to 2.5 mass %, Al: 0.2 to 1.5 mass %, and the balance of Fe and inevitable impurities.
Public/Granted literature
- US20110008200A1 HEAT-RESISTANCE FERRITIC STAINLESS STEEL Public/Granted day:2011-01-13
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