CLAD SHEET ALLOYS FOR BRAZING APPLICATIONS
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United States of America Patent
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app pub date -
Mar 14, 2014
filing date -
Mar 15, 2013
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Abandoned
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Abstract
This application discloses a multilayer aluminum material having an aluminum alloy core and an aluminum alloy cladding, wherein the aluminum alloy cladding contains ≦1.0 wt % Cu, ≦0.5 wt % Fe, ≦1.0 wt % Mn, ≦15 wt % Si, ≦0.15 wt % Ti, ≦7 wt % Zn and at least one of Sr or Na, remainder Al. The aluminum alloy cladding can also contain one or more of ≦0.2 wt % Mg or ≦0.05 wt % Ni. A process for producing the material is also disclosed. The material can be produced in sheet form and is suitable for brazing application. The metal forms fabricated from the multilayer aluminum material by a process comprising brazing steps are also disclosed.
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