High temperature steel for steam turbine and other applications
US10316379B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Oct 18, 2016 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Apr 1, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Steel compositions are provided. A steel composition may include iron; from 0.015 to 0.06 wt. % carbon; from 9 to 12 wt. % chromium; from 0.75 to 1.5 wt. % manganese; from 0.08 to 0.18 wt. % molybdenum; from 0.10 to 0.30 wt. % silicon; from 0.2 to 1.0 wt. % vanadium; from 0.05 to 1.2 wt. % niobium; and optionally, an amount of an additional precipitate forming alloying element. Methods of making the steel compositions are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.