Weldable aluminum alloy workable into sheet form and process for its production
US4814022A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jun 30, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A weldable aluminum alloy workable into sheet form containing Si, Mg and Cu, and a process for its production are disclosed. The alloy comprises (in percent by weight) proportions of Si and Mg as defined by a trapezium having the following co-ordinates: ______________________________________ Si Mg ______________________________________ (A) 0.5 0.1 (B) 0.5 0.2 (C) 1.3 0.5 (D) 1.3 0.1 ______________________________________ PA0 Cu: 0.1-0.5; PA0 Mn: 0-0.2; PA0 Ti: 0-0.1; PA0 Fe: 0-0.35; PA0 other impurites each: .ltoreq.0.05 PA0 total impurity content: .ltoreq.0.15 PA0 balance Al. The production procedure comprises semi-continuous or continuous casting of blanks, an optional homogenisation operation, a hot transformation operation which is terminated in the range of 270.degree. to 340.degree. C., an optional cold transformation operation, a complete solution treatment, a shaping operation using stamping or pressing, folding, bending, etc . . . , and a tempering operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.