High strength low thermal expansion alloy
US5688471A · kind A · utility
5Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Aug 14, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The alloy of the invention provides a low coefficient of thermal expansion alloy having a CTE of about 4.9.times.10.sup.-6 m/m/.degree.C. or less at 204.degree. C. and a relatively high strength. The alloy contains about 40.5 to about 48 nickel, about 2 to about 3.7 niobium, about 0.75 to about 2 titanium, about 0 to about 1 aluminum, about 3.7 or less total niobium plus tantalum and a balance of iron and incidental impurities. Alloys of the invention may be aged to a Rockwell C hardness of at least about 30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.