High-carbon hot-rolled steel sheet and method for manufacturing the same
US10400299B2 · kind B2 · utility
1Cited by
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6Claims
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Key dates
| Filing date | Jul 8, 2014 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Nov 27, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided a high-carbon hot-rolled steel sheet and method for producing the same. The steel sheet has excellent hardenability consistently, even when annealed in a nitrogen atmosphere, and excellent workability. The steel sheet has a hardness in the range of 65 or less in terms of HRB and a total elongation El of 40% or more before a quenching treatment is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.