Corrosion-resistant aluminum alloy

Details Corrosion-resistant aluminum alloy Corrosion-resistant aluminum alloy

1994-05-31

1995-10-24

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

22826251, 165905, B32B 1520, F28F 2108, B23K10310

Patent

active

054608953

ABSTRACT:
An improved aluminum alloy stock material is provided for use in a tubeplate-and-center type evaporator within an automobile air conditioning system. The improved aluminum alloy stock contains a unique aluminum alloy core material which is clad on both sides with an appropriate aluminum-silicon brazing alloy. The inventive aluminum alloy core material is characterized by the presence of boron in amounts sufficient to inhibit the formation of copper-rich precipitates in the grain boundaries of the alloy, so as to enhance the ability of the alloy to resist intergranular corrosion. The alloy is also characterized by a higher copper concentration and lower manganese and titanium concentrations as compared to conventional aluminum alloys used in these types of aluminum alloys.

REFERENCES:
patent: 4357397 (1982-11-01), Baba et al.
patent: 4975243 (1990-12-01), Scott et al.
patent: 5072789 (1991-12-01), Usui et al.
patent: 5176205 (1993-01-01), Anthony
patent: 5240519 (1993-08-01), Kamio et al.
patent: 5377901 (1995-01-01), Rungta et al.

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