Invention Grant
- Patent Title: Steel sheet for hot stamping
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Application No.: US16467295Application Date: 2017-01-17
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Publication No.: US11027522B2Publication Date: 2021-06-08
- Inventor: Genki Abukawa , Kunio Hayashi , Kazuo Hikida , Kaoru Kawasaki
- Applicant: NIPPON STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL CORPORATION
- Current Assignee: NIPPON STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/JP2017/001358 WO 20170117
- International Announcement: WO2018/134872 WO 20180726
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C21D6/00 ; C21D8/02 ; C21D9/46 ; C22C38/00 ; C22C38/02 ; C22C38/06 ; C22C38/44 ; C22C38/48 ; C22C38/50 ; C22C38/54 ; C22C38/58

Abstract:
A steel sheet for hot stamping includes a steel structure represented by an area fraction of bainite, fresh martensite and tempered martensite: 80% or more in total, and a product of a number density (pieces/μm2) of carbides and a proportion of carbides precipitated into prior austenite grains in carbides: 0.50 or more.
Public/Granted literature
- US20200094525A1 STEEL SHEET FOR HOT STAMPING Public/Granted day:2020-03-26
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