The present invention is directed to a brazing sheet comprising an aluminum 3xxx
series core alloy wherein at least one side thereof is provided with an aluminum
clad material comprising from 0.7-2.0% Mn and 0.7-3.0.0% Zn, wherein the clad is
capable of being used as an Inner-liner of a heat exchange product. In one embodiment
one side of the core alloy is provided a material that comprises from 0.7-2.0%
Mn and 0.7-3.0% Zn and the other side of the core is provided with an aluminum
alloy comprising at least 5.5% Si. Thee are further provided methods for preparing
brazing sheets as described herein as well as methods for use of brazing sheet
materials including as tube stock and as heat exchangers, as well as other applications.
