Manufacturing method of a hot-pressed steel plate member
US8449700B2 · kind B2 · utility
2Cited by
0References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2009 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Nov 5, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed are a high-strength, high-toughness hot-pressed steel plate member and a manufacturing method therefor. A specified hot-press process is performed on a steel plate member that, with respect to the chemical composition of the steel plate, includes: 0.15 to 0.4 wt % of C; 1.0 to 5.0 wt % of Mn or of a total of Mn and at least one of Cr, Mo, Cu, and Ni; 0.02 to 2.0 wt % of at least any one of Si and Al; and the remainder being Fe and unavoidable impurities, thus providing the physical properties of a martensite phase average grain diameter of 5 μm or less and a tensile strength of 1200 MPa or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.