Cold rolled steel
US6841010B2 · kind B2 · utility
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18Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 26, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Dec 26, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/0236
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A steel strip is produced having a tensile strength of at least 680 MPa but is such that the total elongation to break off of the strip after annealing is in the range 9% to 12%. Cold rolling may produce a cold reduction of the strip thickness in the range 40% to 80%. The continuously cast strip may be optionally in-line hot rolled prior to coiling to produce an initial strip thickness in the range 40% to 60%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.