Ferrous alloy and abrasion resistant articles thereof
US4386969A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1981 |
| Grant date | Jun 7, 1983 |
| Priority date | — |
| Expiry date | Jul 1, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/94
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An abrasion resistant alloy consists essentially of (by weight): ______________________________________ carbon 2.75-3.25% chromium 18.00-22.00% molybdenum 3.50-6.50% silicon up to 1% manganese up to 1% cobalt 1.50-4.00% vanadium up to 2.00% iron balance ______________________________________ with not substantially more than trace quantities of sulfur, phosphorous and tungsten. The alloy is suitable for forming into sealing rings of grit seal assemblies, which rotate relative to one another and have coaxial, axially opposing, flat annular sealing surfaces that are maintained engaged under bias. Although relatively soft as cast, the alloy can be brought to hardness suitable for final drive grit seals by heating to 950.degree.-1015.degree. F., and can be brought to maximum hardness--adequate for mud seals--by heating to 1750.degree.-1800.degree. F., with cooling in ambient air in each case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.