Method for producing a high strength coated steel sheet having improved ductility and formability, and obtained coated steel sheet
US11827948B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Dec 21, 2016 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing a coated steel sheet having a tensile strength TS of at least 1100 MPa, a total elongation TE according to ISO standard 6892-1 of at least 12%, the product TSxTE of the tensile strength by the total elongation being at least 14200 MPa %, and a hole expansion ratio HER according to ISO standard 16630:2009 of at least 25%, the method including the following successive steps:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.