heat exchanger, use of an aluminum alloy and an aluminum strip, as well as process for producing an aluminum strip

摘要

The present invention relates to a heat exchanger (10), especially for motor vehicles, with at least one aluminum alloy heat exchanger tube (12) and at least one component (14, 16) fluidically connected to the tube. exchanger tube (12), wherein the exchanger tube (12) and component (14, 16) are connected to each other by means of a common welded joint, and wherein the component (14, 16) connected to the The exchanger (12) has a core layer (24) of an aluminum alloy having the following composition: si: maximum 0.7% by weight, fe: maximum 0.70% by weight, cu: maximum 0.10% by weight. weight, mn: 0.90 to 1.50% by weight, mg: maximum 0.30% by weight, cr: maximum 0.25% by weight, zn: maximum 0.50% by weight, ti: maximum 0, 25% by weight, zr: maximum 0,25% by weight, individual unavoidable impurities, maximum 0,05% by weight in total, maximum 0,15% by weight, rest aluminum. The present invention also relates to the use of an aluminum alloy or an aluminum strip having a core layer (24) of this aluminum alloy for the production of a manifold (14, 16) or a tube bottom for a welded heat exchanger (10) as well as a process for producing an aluminum strip.