Invention Grant
- Patent Title: Method for producing an ultra high strength galvannealed steel sheet and obtained galvannealed steel sheet
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Application No.: US17087019Application Date: 2020-11-02
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Publication No.: US11512362B2Publication Date: 2022-11-29
- Inventor: Olga A. Girina , Damon Panahi
- Applicant: ArcelorMittal
- Applicant Address: LU Luxembourg
- Assignee: ArcelorMittal
- Current Assignee: ArcelorMittal
- Current Assignee Address: LU Luxembourg
- Agency: Davidson, Davidson & Kappel, LLC
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C21D1/22 ; C21D6/00 ; C21D8/02 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C23C2/06 ; C23C2/28 ; C23C2/40 ; C22C38/00 ; C23C2/02 ; B32B15/04 ; C22C38/44 ; C23C2/26 ; C23C30/00 ; C22C38/18 ; B32B15/01 ; C22C38/12 ; C23C2/34 ; B32B15/18 ; C22C38/22 ; C22C38/34 ; C22C38/38
Abstract:
A method for producing a coated steel sheet having a tensile strength TS of at least 1450 MPa and a total elongation TE of at least 17% includes the successive steps of providing a cold rolled steel sheet made of a steel having a chemical composition comprising, in weight %: 0.34%≤C≤0.45%, 1.50%≤Mn≤2.30%, 1.50≤Si≤2.40%, 0%
Public/Granted literature
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