High performance press-hardened steel assembly
US11400690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Feb 22, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A press-hardened steel assembly after hot stamping/hot forming including a core layer having a tensile strength of ≥about 1,800 megapascals to ≤about 2,200 megapascals and ≥about 90 volume % martensite, the core layer having a first thickness ≥about 40% to ≤about 96% of the thickness of the press-hardened steel assembly; and a first surface layer along a first surface of the core, the first surface layer having a tensile strength of ≥about 800 megapascals to ≤about 1,200 megapascals and ≥about 90 volume % martensite and bainite. The press-hardened steel assembly has a tensile strength of ≥about 1,600 megapascals to ≤about 2,000 megapascals and a VDA 238-100 bending angle of ≥about 50° to ≤about 80°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.