Corrosion-resistant aluminum alloy brazing composite
AssigneeKaiser Aluminum & Chemical Corporation
InventorsEdgar G. Eichhorn, Arthur C. Scott
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Abstract
A novel aluminum alloy brazing composition is provided consisting of a core alloy consisting of a core alloy and a cladding on at least one side of the core alloy and wherein the core alloy consists essentially of manganese from about 0.8 to about 1.5%, silicon from about 0.45 to about 0.75%, titanium from about 0.03 to about 0.1%, a combined magnesium, copper and zinc content not in excess of about 0.15%, an iron content not in excess of about 0.3%, the total quantity of other impurities not exceeding about 0.15%, balance aluminum; and wherein the cladding consists of an AA 4XXX series aluminum alloy. The aluminum alloy brazing composition can be employed in the brazing of evaporators such as plate-fin evaporators utilized in the automotive field.
Claims6
In the method of vacuum brazing, the improvement which comprises using as brazing alloy an aluminum alloy brazing composition consisting of an aluminum alloy core and a cladding applied to at least one side of the aluminum alloy core, wherein the aluminum alloy core consists essentially of manganese from about 0.8 to about 1.5%, silicon from about 0.45 to about 0.75%, titanium from about 0.03 to about 0.1%, a combined magnesium, copper and zinc content not in excess of about 0.15%, an iron content not in excess of about 0.3%, the total quantity of other impurities not exceeding about 0.15%, balance aluminum;
- and wherein the cladding consists of an AA 4XXX series aluminum alloy.
Dependencies are inferred from the claim text.