Method of making drawn and hemmed aluminum sheet metal and articles made thereby

US4000007A · kind A · utility

Assignee

• Cegedur Societe de Transformation de l'Aluminum Pechiney · FR

Inventors

• Roger Develay · Saint-Égrève, FR
• Richard Deschamps · Seyssinet-Pariset, FR
• Jacques Peyraud · L'Haÿ-les-Roses, FR

Key dates

• Filing date: May 7, 1975
• Grant date: Dec 28, 1976
• Expiry date: May 7, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C21/04
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Drawn and hemmed metal parts, such as vehicle body panels, are made from an aluminum based alloy containing 1.5-2.5% copper, 0.5-1.0% magnesium and 0.4-0.8% silicon and in addition may contain up to 0.2% chromium, 0.4% manganese, 0.2% titanium, 0.2% zirconium and 0.5% iron.