HEAT EXCHANGER, USE OF AN ALUMINIUM ALLOY AND OF AN ALUMINIUM STRIP AS WELL AS A METHOD FOR THE PRODUCTION OF AN ALUMINIUM STRIP

The invention relates to a heat exchanger (10), in particular for motor vehicles, with at least one exchanger tube (12) of an aluminium alloy and with at least one component (14, 16) connected fluidically to the exchanger tube (12), wherein the exchanger tube (12) and the component (14, 16) are connected to one another by way of a common soldered connection and wherein the component (14, 16) connected to the exchanger tube (12) has a core layer (24) of an aluminium alloy with the following composition: Si: max. 0.7% by weight, Fe: max. 0.70% by weight, Cu: max. 0.10% by weight, Mn: 0.9 - 1.5% by weight, Mg: max. 0.3% by weight, Cr: max. 0.25% by weight, Zn: max. 0.50% by weight, Ti: max. 0.25% by weight, Zr: max. 0.25% by weight, unavoidable impurities individually max. 0.05% by weight, altogether max. 0.15% by weight, the remainder aluminium. The invention also relates to the use of an aluminium alloy or an aluminium strip with a core layer (24) of this aluminium alloy for the production of a manifold (14, 16) or a tubesheet for a soldered heat exchanger (10) and to a method for producing an aluminium strip.