Ferrite-austenite stainless steel castings having an improved erosion-corrosion resistance
US4101347A · kind A · utility
7Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1977 |
| Grant date | Jul 18, 1978 |
| Priority date | — |
| Expiry date | May 6, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/44
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ferrite-austenite stainless steel castings having an improved erosion-corrosion resistance consist by weight percentage of not more than 0.1% of C, 0.2-3% of Si, not more than 2% of Mn, 2.2-4% of Cu, 3-9% of Ni, 20-30% of Cr, 2-6% of Mo, 0.08-0.25% of N, 0.12-0.3% of Sn, at least one of 0-2% of Nb, 0-1% of Ti, 0-2% of Ta, 0-1% of Zr and 0-1.5% of V and remainder of Fe, and are obtained by solution heat treatment at 1,000.degree.-1,150.degree. C in such a manner that Cr- and Ni-equivalents lie within an area represented by the area ABCD shown in FIG. 1 of the accompanying drawings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.