Low density steel having good drawability
US9765415B2 · kind B2 · utility
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3References
10Claims
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Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Dec 9, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cold-rolled and annealed ferritic steel sheet is provided. The steel has a composition comprising, expressed by weight: Σ(A)di denotes the total length of grain boundaries containing κ precipitates relative to an area (A) and Σ(A)Li denotes the total length of the grain boundaries relative to the area (A). A content of carbon in solid solution is less than 0.005% by weight, and the cold-rolled and annealed ferritic steel sheet has a thickness between 0.6 mm and 1.5 mm. A skin part or structural part for the automotive field is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.