Cast iron with improved oxidation resistance at high temperatures
US6852276B2 · kind B2 · utility
3Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2002 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Apr 15, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C37/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An iron cast having iron as a major component, and including C, Si, Mn, Cr, Mo and Ni, where the cast iron provides excellent heat resistance and oxidation resistance at high temperatures. The cast iron beneficially contains between 2.5 to 3.0% of C; 2.0 to 3.0% of Si; 0.8 to 1.2% of Mn; 1.7 to 3.0% of Cr; 0.025 to 0.06% of Mg; 0.15 to 0.4% of Mo; and 17.0 to 20.0% of Ni; but less than 0.1% of P; and less than 0.02% of S. The cast iron is suitable for extremely severe conditions at high temperatures, and can be used for an exhaust manifold for engines where temperature of the manifold may reach 850° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.