Invention Grant
- Patent Title: Steel sheet
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Application No.: US16335446Application Date: 2017-01-25
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Publication No.: US11572610B2Publication Date: 2023-02-07
- Inventor: Katsuya Nakano , Kunio Hayashi , Yuri Toda , Eisaku Sakurada , Akihiro Uenishi
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/JP2017/002472 WO 20170125
- International Announcement: WO2018/138791 WO 20180802
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C22C38/40 ; B32B15/01 ; C21D6/00 ; C21D8/02 ; C22C38/02 ; C22C38/00 ; C22C38/04 ; C22C38/06 ; C22C38/20 ; C22C38/22 ; C22C38/24 ; C22C38/26 ; C22C38/28 ; C22C38/32 ; C23C2/02 ; C23C2/06 ; C23C2/40

Abstract:
A steel sheet includes a predetermined chemical composition and a metal structure represented by, in area fraction, ferrite: 50% to 95%, granular bainite: 5% to 48%, martensite: 2% to 30%, and upper bainite, lower bainite, tempered martensite, retained austenite, and pearlite: 5% or less in total.
Public/Granted literature
- US20200040435A1 STEEL SHEET Public/Granted day:2020-02-06
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