Hot-pressed steel sheet member, method of manufacturing the same, and steel sheet for hot pressing
US10344351B2 · kind B2 · utility
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Key dates
| Filing date | Dec 20, 2013 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Dec 6, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hot-pressed steel sheet member includes: a specific chemical composition; and a steel microstructure represented by, in area %, ferrite: 10% to 70%, martensite: 30% to 90%, and a total area ratio of ferrite and martensite: 90% to 100%. 90% or more of all Ti in steel precipitates, and a tensile strength of the hot-pressed steel sheet member is 980 MPa or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.