Brazing sheet core alloy for heat exchanger
AssigneeNovelis Inc.
InventorsANDREW D. HOWELLS, HANY AHMED, KEVIN MICHAEL GATENBY, JYOTHI KADALI, PIERRE HENRI MAROIS
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Abstract
The present invention provides a new aluminum alloy material which may be used for a core alloy of a corrosion-resistant brazing sheet. This core alloy displays with high strength, and good corrosion resistance for use in heat exchangers. This aluminum alloy material was made by direct chill (DC) casting. The present inventions also provides corrosion-resistant brazing sheet packages including the aluminum alloy material as a core and one or more cladding layers.
Claims25
An aluminum alloy comprising about 0.16-0.5% Si, 0.5-1.1% Cu, 0.001-0.20% Ti, 0.15-0.55% Fe, 0-0.35% Mg, and 1.3-1.80% Mn, up to 0.15% of impurities, with the remainder as Al.
A multi-layer metal sheet, comprising:
- a core layer of aluminum-containing alloy comprising from 0.1% to 0.2% of titanium, wherein the core layer has a first side and a second side;
- a first cladding layer comprising from 2.5% to 4.0% of zinc;
- and
- a second cladding layer comprising from 2.5% to 4.0% of zinc,
- wherein the first side of the core layer is adjacent to the first cladding layer to form a first interface and the second side of the core layer is adjacent to a second cladding layer to form a second interface.
Dependencies are inferred from the claim text.