Rolled high aluminum stainless steel foil for use as a substrate for a catalyst carrier
US4870046A · kind A · utility
13Cited by
14References
2Claims
0Family size
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Key dates
| Filing date | Apr 21, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Apr 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12431
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rolled high Al stainless steel foil for use as a substrate for a catalyst carrier, which comprises more than 12 wt % up to 20 wt % of Al, from 5 to 25 wt % of Cr, from 0.05 to 2 wt %, in total, of at least one element selected from the group consisting of Ti, Nb, Zr, and Hf, and the remainder substantially consisting of Fe and unavoidable elements. The stainless steel foil has an excellent resistance to oxidation in an engine exhaust gas at a temperature of 1150.degree. C. or higher, can be obtained by foil-rolling, and enables a reduction of the exhaust back-pressure and weight of automobile catalyst converters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.