Duplex ferrit IC-martensitic stainless steel
US4047941A · kind A · utility
5Cited by
12References
5Claims
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Key dates
| Filing date | Mar 29, 1976 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Mar 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A ferritic-martensitic duplex stainless steel having properties between those of ferritic and martensitic stainless steels. The steel consists essentially of, by weight, from 11.0 to 20.5% chromium, from 1.0 to 6.5% manganese, from 0.005 to 0.1% carbon, balance essentially iron. The steel is additionally characterized by chromium and manganese contents within Area ABCD of the Figure, and by a chromium equivalency of from 5.0 to 11.0, in accordance with the following equation: ##EQU1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.