Aluminium alloys

US4588553A · kind A · utility

Assignee

• The Secretary of State for Defence in Her Brittanic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland · GB

Inventors

• Brian Evans · Allen, US
• Christopher J. Peel · Fleet, GB

Key dates

• Filing date: Feb 22, 1983
• Grant date: May 13, 1986
• Expiry date: Feb 22, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C21/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Aluminium alloys having compositions within the ranges (in wt %) 2 to 2.8 lithium--0.4 to 1 magnesium--1 to 1.5 copper--0 to 0.2 zirconium--0 to 0.5 manganese--0 to 0.5 nickel--0 to 0.5 chromium--balance aluminium. The alloys are precipitation hardenable and exhibit a range of properties, according to heat treatment, which make them suitable for engineering applications where light weight and high strength are required.