Formable high strength low alloy steel sheet
US4415376A · kind A · utility
7Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1982 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Feb 16, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/004
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention is directed to a hot-rolled steel sheet having an essentially refined ferritic grain size, a balanced chemical composition comprising, by weight, 0.06 to 0.09% carbon, 1.0 to 1.6% manganese, 0.5% maximum silicon, 0.03 to 0.05% columbium, 0.06 to 0.12% vanadium, 0.010 to 0.025% nitrogen, 0.004% maximum sulfur, 0.02% maximum phosphorus, 0.02 to 0.08% aluminum, balance essentially iron, and characterized by 80 ksi minimum yield strength, improved transverse bendability, and improved sheared edge stretchability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.