1500 MPA-grade steel with high product of strength and elongation for vehicles and manufacturing methods therefor
US11047027B2 · kind B2 · utility
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Key dates
| Filing date | Jul 25, 2017 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Feb 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided are a 1500 MPa-grade steel with a high product of strength and elongation for vehicles and a manufacturing method thereof. The mass percentages of the chemical elements thereof are: 0.1-0.3% of C, 0.1-2.0% of Si, 7.5-12% of Mn, 0.01-2.0% of Al, and the balance of iron and other inevitable impurities. The microstructure of the steel with a high product of strength and elongation for vehicles is austenite+martensite+ferrite or austenite+martensite. The steel for vehicles can reach a grade of 1500 MPa, and has a product of strength and elongation of no less than 30 GPa %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.