Hot-pressed steel sheet member, method of manufacturing the same, and steel sheet for hot pressing
US10711322B2 · kind B2 · utility
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Key dates
| Filing date | Feb 5, 2019 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Feb 5, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A steel sheet for hot pressing includes: a specific chemical composition; and a steel structure comprising ferrite and cementite and represented, in area %: a total area ratio of bainite and martensite: 0% to 10%; and an area ratio of cementite: 1% or more; and a concentration of Mn in the cementite is 5% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.