High-strength high-workability cold rolled steel sheet having excellent impact resistance
US6210496A · kind A · utility
16Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/34
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cold rolled steel sheet having high strength and high formability and having excellent crushing performance can include 0.05-0.40 mass % of C, 1.0-3.0 mass % of Si, 0.6-3.0 mass % of Mn, 0.02-1.5 mass % of Cr, 0.010-0.20 mass % of P and 0.01-0.3 mass % of Al, with the remainder consisting essentially of Fe. The steel sheet includes a ferrite major phase and a minor phase consisting of martensite, acicular ferrite and retained austenite. The cold rolled steel sheet can be used in automobiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.