Ferritic stainless steel and process for producing same
US10968499B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Jul 2, 2015 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Oct 1, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ferritic stainless steel that has excellent formability and ridging resistance and can be produced with high productivity is provided. The ferritic stainless steel has: a predetermined chemical composition; a microstructure containing ferrite crystal grains which satisfy at least one of a C concentration of 2CC or more and an N concentration of 2CN or more, the ferrite crystal grains having a volume fraction with respect to a whole volume of the microstructure of 5% or more and 50% or less, where CC and CN are respectively C content and N content in the steel in mass %; and a Vickers hardness of 180 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.