Invention Grant
- Patent Title: High strength steel sheet and method for manufacturing the same
- Patent Title (中): 高强度钢板及其制造方法
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Application No.: US13060115Application Date: 2009-09-04
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Publication No.: US09121087B2Publication Date: 2015-09-01
- Inventor: Hiroshi Matsuda , Yoshimasa Funakawa , Yasushi Tanaka
- Applicant: Hiroshi Matsuda , Yoshimasa Funakawa , Yasushi Tanaka
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JP2008-232401 20080910; JP2009-179953 20090731
- International Application: PCT/JP2009/065877 WO 20090904
- International Announcement: WO2010/029983 WO 20100318
- Main IPC: C22C38/02
- IPC: C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/60 ; C22C38/00 ; C21D6/00 ; C21D8/02 ; C21D8/04 ; C21D9/46 ; C23C2/02 ; C23C2/28
Abstract:
A high-strength steel sheet has good ductility and stretch-flangeability and has a tensile strength (TS) of 980 MPa or more. The steel sheet contains 0.17%-0.73% C, 3.0% or less Si, 0.5%-3.0% Mn, 0.1% or less P, 0.07% or less S, 3.0% or less Al, and 0.010% or less N, in which Si+Al is 0.7% or more.
Public/Granted literature
- US20110146852A1 HIGH STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2011-06-23
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