Workpiece made from a chromium alloy
US6616779B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Mar 21, 2002 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Mar 21, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C30/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a process for producing a workpiece from a chromium alloy, consisting of:32-37% by weightchromium,28-36% by weightnickel,max. 2% by weightmanganese,max. 0.5% by weightsilicon,max. 0.1% by weightaluminum,max. 0.03% by weightcarbon,max. 0.025% by weightphosphorus,max. 0.01% by weightsulfur,max. 2% by weightmolybdenum,max. 1% by weightcopper,0.3-0.7% by weightnitrogen,remainder iron and production-related admixtures and impurities, the workpiece is cold worked and, by means of the cold working, is brought to a yield strength of at least 1000 MPa (Rp0.2≧1000 MPa).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.