High strength weldable Al-Mg alloy

US7998402B2 · kind B2 · utility

Assignee

• ALERIS ALUMINUM KOBLENZ GMBH · DE

Inventors

• Nadia Telioui · Rotterdam, NL
• Steven Dirk Meijers · Alkmaar, NL
• Andrew Norman · Beverwijk, NL
• Achim Buerger · Grevesmühlen, DE
• Sabine Maria Spangel · Koblenz, DE

Key dates

• Filing date: Aug 14, 2006
• Grant date: Aug 16, 2011
• Expiry date: Aug 14, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12736
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An aluminium alloy product having high strength, excellent corrosion resistance and weldability, having the following composition in wt. %: Mg 3.5 to 6.0, Mn 0.4 to 1.2, Fe<0.5, Si<0.5, Cu<0.15, Zr<0.5, Cr<0.3, Ti 0.03 to 0.2, Sc<0.5, Zn<1.7, Li<0.5, Ag<0.4, optionally one or more of the following dispersoid forming elements selected from the group consisting of erbium, yttrium, hafnium, vanadium, each <0.5 wt. %, and impurities or incidental elements each <0.05, total <0.15, and the balance being aluminium.