| 摘要 |
The invention relates to a metal sheet for a stamped lining or structural part for a motor vehicle body, also referred to as a body-in-white. Said metal sheet is made of an aluminum alloy having the following composition (in wt.%): Si: 0.85-1.20, Fe: <0.30, Cu: 0.10-0.30, Mg: 0.70-0.90, Mn: <0.30, Zn: 0.90-1.60, V: 0.02-0.30, Ti: 0.05-0.20, other elements: <0.05 each, and totaling <0.15, and aluminum residue having, after solution heat treatment, quenching, pre-tempering, or reversion, optional ambient-temperature maturation for between 72 hours and 6 months, controlled-tension pre-deformation of 2% and paint curing treatment for 20 min at 185°C, an elastic limit Rp0.2 of at least 300 MPa. The metal sheets according to the invention make it possible to reduce the thickness of the parts while meeting all other property requirements. |
