Stainless steel alloy
US5660939A · kind A · utility
7Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1996 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Feb 28, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12979
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A chromium nickel silicon stainless steel alloy with improved wear resistance consists of, in weight percent, 19 to 22 chromium, 8.5 to 10.5 nickel, 5.25 to 5.75 silicon, 1.7 to 2.0 carbon, 8.0 to 9.0 niobium, 0.3 to 0.5 titanium and the balance iron plus impurities. The addition of titanium and increased amounts of niobium and silicon alter the microstructure of the stainless steel to form a duplex austenitic/ferritic microstructure which undergoes secondary hardening due to the formation of an iron silicon intermetallic phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.