Invention Grant
- Patent Title: Ultrahigh-strength and high-ductility steel sheet having excellent cold formability
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Application No.: US16761953Application Date: 2018-09-17
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Publication No.: US11655517B2Publication Date: 2023-05-23
- Inventor: Joo-Hyun Ryu , Kyoo-Young Lee , Sea-Woong Lee
- Applicant: POSCO CO., LTD
- Applicant Address: KR Pohang-si
- Assignee: POSCO CO., LTD
- Current Assignee: POSCO CO., LTD
- Current Assignee Address: KR Pohang-si
- Agency: Morgan, Lewis & Bockius LLP
- Priority: KR 20170148175 2017.11.08
- International Application: PCT/KR2018/010907 2018.09.17
- International Announcement: WO2019/093650A 2019.05.16
- Date entered country: 2020-05-06
- Main IPC: C23C2/06
- IPC: C23C2/06 ; C23C2/40 ; C22C38/14 ; C22C38/12 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; B32B15/01 ; C21D9/46 ; C21D8/02 ; C21D6/00 ; C23C2/28 ; C22C38/26 ; C22C38/28 ; C23C30/00 ; B32B15/04 ; B32B15/18 ; C22C38/18 ; C22C38/24 ; C23C28/02 ; C22C38/42 ; C23C2/26 ; C22C38/50 ; C22C38/20 ; C22C38/46 ; C22C38/38 ; C22C38/44 ; C22C38/22 ; C22C38/40 ; C23C2/12 ; C23C28/00 ; C22C38/48
Abstract:
The present invention relates to an automotive steel sheet and, more specifically, provides: an ultrahigh-strength and high-ductility steel sheet ensuring ultrahigh strength and high ductility and, simultaneously, having excellent cold formability due to a high yield strength ratio, and improved collision characteristics.
Public/Granted literature
Information query
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