Process for manufacturing a foil of ferritic stainless steel having a high aluminum content, aluminum-containing ferritic stainless steel, and catalyst support useful for a motor-vehicle exhaust
US6086689A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Mar 2, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/0278
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for manufacturing a foil of ferritic stainless steel having a high aluminum content, which can be used in particular for a catalyst support in a motor-vehicle exhaust, wherein a ferritic stainless steel sheet of the following composition: PA1 0.005%<carbon<0.060% PA1 10%<chromium<23% PA1 0.1%<aluminum<3% PA1 0.003%<nitrogen<0.030% PA1 0.1%<manganese<2% PA1 0.1%<silicon<2% PA1 rare-earth elements in a proportion of between 0.03% and 0.15%, is subjected to: PA2 plating between two sheets of aluminum in order to obtain a laminate, rolling the laminate to a thickness of 0.03-0.25 mm to form a foil, static diffusion annealing the foil in a hydrogen atmosphere, and finish rolling greater than 20%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.