Austenitic stainless steel and production method therefor
US11041232B2 · kind B2 · utility
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Key dates
| Filing date | Apr 6, 2017 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Dec 23, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An austenitic stainless steel is provided which has a chemical composition that consists, by mass %, of: C: 0.015% or less, Si: 1.00% or less, Mn: 2.00% or less, P: 0.05% or less, S: 0.030% or less, Cr: 16.0% or more and less than 22.0%, Ni: 11.0 to 16.0%, Mo: 2.5 to 5.0%, N: 0.07% or more and less than 0.15%, Nb: 0.20 to 0.50%, Al: 0.005 to 0.040%, Sn: 0 to 0.080%, Zn: 0 to 0.0060%, Pb: 0 to 0.030%, and the balance: Fe and impurities, and that satisfies the formula [MoSS/Mo≥0.98] (MoSS: Mo amount dissolved in the steel).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.