Ferrite system stainless steel having excellent nacl-induced hot corrosion resistance and high temperature strength
US5427634A · kind A · utility
4Cited by
1References
7Claims
0Family size
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Key dates
| Filing date | Dec 8, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Dec 8, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/28
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
To simultaneously satisfy retention of a high temperature strength at an initial stage, and during use, and NaCl-induced hot corrosion resistance as well as oxidation resistance in a high temperature member used in an exhaust system of automobiles, the present invention provides a heat-resistant ferrite system stainless steel which has a low (C+N) content, reduces a free (C+N) content by adding Ti or Zr, and can secure sufficiently efficiently solid solution strengthening and NaCl-induced hot corrosion resistance for a long time by sufficiently securing solid solution contents of W, Nb and Mo.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.