Aluminum alloy with intergranular corrosion resistance and methods of making and use
US6602363B2 · kind B2 · utility
5Cited by
13References
8Claims
0Family size
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Key dates
| Filing date | Apr 23, 2001 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | May 31, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A corrosion resistant aluminum alloy has controlled amounts of iron, manganese, chromium, and titanium along with levels of copper, silicon, nickel, and no more than impurity levels of zinc. The alloy chemistry is tailored such that the electrolytic potential of the grain boundaries matches the alloy matrix material to reduce intergranular corrosion. The alloy is particularly suited for the manufacture of tubing for heat exchangers using extrusion and brazing techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.