Steel for use in exhaust manifolds of automobiles
US5489345A · kind A · utility
5Cited by
10References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 24, 1995 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Jul 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A ferritic stainless steel which exhibits improved formability and which is especially useful for making 950.degree. C. or 1000.degree. C. exhaust manifolds is disclosed, the steel composition thereof consisting essentially of, on the basis of weight: PA1 C: 0.02% or less, Si: 1.0% or less, PA1 Mn: 1.0% or less, P: 0.04% or less, PA1 S: 0.005% or less, Cu: 0.1-1.0%, PA1 Cr: 18.0-25.0%, Mo: 1.0 (exclusive)-3.0%, PA1 Nb: 0.1-1.0%, Al: 0.20% or less, PA1 N: 0.02% or less, B: 0-0.01%, PA1 C+N.ltoreq.0.03%, PA1 preferably, 21%.ltoreq.Cr+Mo+Nb.ltoreq.25%, PA1 Fe and incidental impurities: balance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.