Novelis Koblenz Gmbh

Fabian Ritz

Steven Kirkham

Bernd Jacoby

Axel Alexander Maria Smeyers

Arne Schlegel

Florian Landgraf

Dennis Aust

An aluminium alloy multi-layered brazing sheet product for brazing in an inert-gas atmosphere without a flux includes a core layer made of a 3xxx alloy including 0.20-0.75 wt. % Mg, and provided with a covering clad layer including 2-5 wt. % Si on one or both sides of said 3xxx alloy core layer and a Al—Si brazing clad layer including 7-13 wt. % Si positioned between the 3xxx alloy core layer and the covering clad layer. The covering clad layer has a thickness Xand the Al—Si brazing clad layer has a thickness Xand wherein X≥2X. The aluminium alloy multi-layered brazing sheet product can be used in a fluxfree controlled atmosphere brazing (CAB) operation to produce a heat exchanger apparatus.

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Munich, Georgia

Fabian Ritz