Niobium-stabilized 14% chromium ferritic steel, and use of same in the automobile sector
US6423159B1 · kind B1 · utility
2Cited by
5References
6Claims
0Family size
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Key dates
| Filing date | Sep 8, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Sep 8, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/0273
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for production of sheet-metal strip of niobium-stabilized 14% chromium ferritic steel, characterized in that certain steel is subjected to:cold rolling of the hot sheet metal with or without preliminary annealing,final annealing of the sheet-metal strip at a temperature of between 800° C. and 1100° C. for a duration of between minute and 5 minutes and preferably at a temperature of about 1050° C. for a time of about 2 minutes. Steel and exhaust manifold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.