High tensile strength steel having excellent bendability and stretch-flangeability and manufacturing method thereof
US10941468B2 · kind B2 · utility
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Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Jan 2, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a high tensile strength steel having a tensile strength of 780 MPa grade or higher which is used for structural members of automobiles, and more specifically relates to high tensile strength steel having excellent bendability and stretch-flangeability while still satisfying characteristics of DP steels of low yield ratio and high ductility, and to a manufacturing method thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.