Steel sheet for hot press and method of manufacturing same, and hot-press forming part and method of manufacturing same
US10858718B2 · kind B2 · utility
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2References
8Claims
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Key dates
| Filing date | Jan 13, 2017 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | May 1, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A steel sheet for hot press comprises: a predetermined chemical composition; and a steel microstructure that includes ferrite and cementite and in which Mnθ/Mnα is 1.4 or more, where Mnα is a Mn concentration of the ferrite and Mnθ is a Mn concentration of the cementite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.