Two-phase stainless steel, method of manufacturing the same, and diaphragm, pressure sensor, and diaphragm valve using two-phase stainless steel
US9523620B2 · kind B2 · utility
3Cited by
4References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 23, 2014 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | May 26, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
It is an object of the present invention to provide a metal diaphragm capable of achieving a higher strength, excellent corrosion resistance, and a smooth surface condition, and a pressure sensor including the diaphragm. The diaphragm according to the present invention includes a two-phase stainless steel having a composition of 24 to 26 mass % Cr, 2.5 to 3.5 mass % Mo, 5.5 to 7.5 mass % Ni, 0.03 mass % or less C, 0.08 to 0.3 mass % N, and the balance Fe and inevitable impurities, and having a 0.2% proof stress of 1300 MPa or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.