Steel sheet for hot stamping member and method of producing same
US9617624B2 · kind B2 · utility
11Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2012 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Jul 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12799
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A steel sheet for a hot stamping member contains, as a chemical composition, 0.10 mass % to 0.35 mass % of C; 0.01 mass % to 1.0 mass % of Si; 0.3 mass % to 2.3 mass % of Mn; 0.01 mass % to 0.5 mass % of Al; limited to 0.03 mass % or less of P; limited to 0.02 mass % or less of S; limited to 0.1 mass % or less of N; and a balance consisting of Fe and unavoidable impurities, in which a standard deviation of diameters of iron carbides which are contained in a region from a surface to a ¼ thickness position of the steel sheet is less than or equal to 0.8 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.