Invention Grant
- Patent Title: Method for producing an ultra high strength coated or not coated steel sheet and obtained sheet
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Application No.: US16413111Application Date: 2019-05-15
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Publication No.: US11131003B2Publication Date: 2021-09-28
- 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 ; C25D5/36 ; B32B15/01 ; C21D8/02 ; C21D8/04 ; C23C2/04 ; B32B15/04 ; C23C30/00 ; C23C2/12 ; B32B15/18 ; B32B15/00 ; C22C38/34 ; C23C2/28 ; C25D7/06 ; C21D1/25 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/22 ; C22C38/38 ; C21D1/78 ; C21D1/19 ; C21D9/48 ; C22C38/18 ; C22C38/12 ; C21D1/18 ; C25D3/22 ; C25D7/00 ; C22C38/26 ; C23C2/06 ; C23C2/40
Abstract:
A method for producing a cold rolled steel sheet having a tensile strength≥1470 MPa and a total elongation TE≥19%, the method comprising the steps of annealing at an annealing temperature AT≥Ac3 a non-treated steel sheet whose chemical composition contains in weight %: 0.34%≤C≤0.40%, 1.50%≤Mn≤2.30%, 1.50≤Si≤2.40%, 0%
Public/Granted literature
- US20190264299A1 METHOD FOR PRODUCING AN ULTRA HIGH STRENGTH COATED OR NOT COATED STEEL SHEET AND OBTAINED SHEET Public/Granted day:2019-08-29
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