Aluminum alloy with intergranular corrosion resistance and methods of making and use
US6660107B2 · kind B2 · utility
1Cited by
13References
9Claims
0Family size
Inventor
Key dates
| Filing date | Aug 20, 2002 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Oct 23, 2022 |
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.