Thick-walled high-strength hot rolled steel sheet with excellent low-temperature toughness and method of producing same
US9493865B2 · kind B2 · utility
4Cited by
8References
16Claims
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Key dates
| Filing date | Mar 2, 2015 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Mar 2, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A thick-walled high-strength hot rolled steel sheet has a high tensile strength TS of 521 MPa or more and excellent low-temperature toughness. The steel material forming the sheet contains 0.02%-0.08% C, 0.01%-0.10% Nb, and 0.001%-0.05% Ti and is heated; C, Ti, and Nb satisfies (Ti+(Nb/2))/C<4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.