Metal sheet for a motor vehicle body having high mechanical strength
US10829844B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2016 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Jul 21, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The subject matter of the invention is a sheet for stamped lining or structural parts for an auto body stilled referred to as a body-in-white, made of aluminum alloy having the following composition (% by weight): Si: 0.85-1.20, Fe: <0.30, Cu: 0.10-0.30, Mg: 0.70-0.90, Mn: <0.3; Zn: 0.9-1.60, V: 0.02-0.30, Ti: 0.05-0.20, other elements <0.05 each and <0.15 total, balance aluminum, having, after solution heat treatment, quenching, pre-aging or reversion, possible aging at ambient temperature for 72 hours to 6 months, 2% controlled tensile pre-deformation, and paint baking treatment for 20 minutes at 185° C., an elastic limit Rpo.2 of at least 300 MPa. The sheets according to the invention make it possible to reduce the thickness of the parts while still meeting all the other required properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.