Powder-metallurgy vanadium-containing tungsten-type high-speed steel
US4276087A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | May 3, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A powder-metallurgy produced, vanadium-containing, tungsten-type high-speed steel wherein hardness at elevated temperature is achieved without resorting to conventional, high cobalt contents. This is achieved by providing a critical amount of tungsten and/or molybdenum above that conventionally used in combination with vanadium and carbon in an amount sufficient to combine with the vanadium present and with an excess carbon to provide matrix strengthening. The high hardness and wear resistance at elevated temperature is imparted to the steel by the carbides of vanadium, tungsten and/or molybdenum. Columbium may be substituted for a portion of the vanadium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.