Non-magnetic, high density alloy
US6045601A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1999 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Sep 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H11/048
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high density, non-magnetic alloy is described along with a process for manufacturing it. The preferred composition for the alloy is approximately 95% by weight of tungsten and 5% of austenitic stainless steel. The process for manufacturing the alloy begins with blending tungsten and stainless steel powders which are then mixed with an organic binder to form a feedstock. The latter is then molded into the form of compacted items, such as a hard drive counterweight balance, and then sintered in either vacuum or a hydrogen atmosphere. The tungsten heavy alloys of the present invention can be easily manufactured in large volume economically in many intricate shapes with excellent control of weight and dimensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.