High-strength high-CR steel with excellent toughness and oxidation resistance
US5069870A · kind A · utility
11Cited by
10References
25Claims
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Key dates
| Filing date | Mar 6, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Mar 6, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high-strength high-Cr steel with excellent high-temperature strength and toughness as well as improved resistance to oxidation and high-temperature corrosion is disclosed, which consists essentially of, in weight %: PA0 C : 0.04-0.2%, Si: not greater than 0.7%, Mn: 0.1-1.5%, Ni: not greater than 1%, Cr: 8-14%, Mo: 0.01-1.2%, W: 0.8-3.5%, V : 0.1-0.3%, Nb: 0.01-0.2%, Al: not greater than 0.05%, Cu: 0.4-3%, Mg: 0.0005-0.5%, N: 0.001-0.1%, B : 0-0.02%, PA0 at least one of La, Ce, Y, Ca, Ti, Zr, and Ta each in an amount of 0-0.2%, and PA0 Fe and incidental impurities: balance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.