Alloy steel powder for powder metallurgy
US4804409A · kind A · utility
1Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Sep 11, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Sep 11, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C33/0264
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The improvement of strength and hardness of steel powders can be realized under good compressibility by alloying 0.2.about.2.0 wt. % of W and 0.8.about.3.0 wt. % of Ni, and further 0.1.about.1.0 wt. % of Mo or 0.2.about.2.0 wt. % of Cu in steel powder, and further the reduction of dimensional deviation introduced by heat treatment after sintering can also be achieved. This substantially eliminates damaging the shape and size of the sintered body after heat treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.