Multi-layered aluminum strip for brazing, brazing component, manufacturing method and heat exchanger and use

Abstract

An aluminum strip for a component, in particular a brazing component, in particular a tube or a disk, includes a profile having a brazing connection, wherein in at least one area, in particular in the area of the brazing connection: a first part of the strip thickness is taken up by a core layer of a first aluminum alloy; at least a second part of the strip thickness is taken up by at least one plating layer of a second aluminum alloy, wherein the first and the second aluminum alloy are configured to form a 'brown band' layer during a brazing process; and at least a third part of the strip thickness is taken up by at least one 'brown band' layer that is formed out of the first and the second aluminum alloy during the brazing process, and wherein a strip thickness of the aluminum strip is less than 500 μm and a thickness of the core layer and/or a thickness of the plating layer is configured such that after the brazing process at least 5% of the strip thickness that is taken up by the first aluminum alloy of the core layer still remains in the at least one area, and the “brown band” layer takes up more than 20% of the strip thickness, and the core layer is designed to be multi-layered with one, preferably central, main core layer and at least one side core layer.