Alcan International Limited

Alan Robert Carr

Kevin Michael Gatenby

Michael Jackson Bull

Peter G Sheasby

William F Marwick

Joanna Mary Sharp

An aluminium alloy in the AA5XXX series has the composition: Si 0.10-0.25 %; Fe 0.18-0.30 %; Cu up to 0.5 %; Mn 0.4-0.7 %; Mg 3.0-3.5%; Cr up to 0.2%; and Ti up to 0.1%. Rolled and annealed sheet of the alloy is readily formed into shaped components for use in vehicles which components have good strength and resistance to stress corrosion cracking.

A1 alloy and method

A lubricant is provided which has a hardness in the range 0.1-10 N/mm at all temperatures in the range 15-40&deg; C. The lubricant consists of at least one full ester of a glycol with a fatty acid, e.g. ethylene glycol dilaurate, optionally mixed with a minor amount of a fatty acid such as stearic acid, and/or a minor amount of a partial ester of a glycol with a fatty acid. The lubricant is useful in the production of press-formed components, and particularly in techniques for converting aluminium sheet to adhesively bonded aluminium structures.

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Northants, United Kingdom

Alan Robert Carr