Aluminum-Copper as Thermal Interface Materials or Heat sink material

Heat sinks usually consist of a metal with good thermal conductivity, usually aluminum or copper. Among other things, they are used in power electronics (e.g. for electro cars, processors, LED-operated lights, etc.). The advantage of a heat sink made out of aluminum-copper clad is that the thermal conductivity of copper and the heat capacity of aluminum are combined in one composite.There are no electrical or thermal contact resistances. A composite with aluminum-copper is therefore more effective for heat sinks than pure aluminum or copper. Furthermore, no galvanic finishing of the pin fins is required with an aluminium-copper heat sink. Compared to a heat sink made of aluminum, the lifecycle of a chip can be doubled, as the temperature of the component is reduced by 10 Kelvin.

Aluminum-Copper claddings of 7.0 mm as standard can be produced at Wickeder Westfalenstahl.
Other dimensions on request.



› High thermal conductivity

› High electrical conductivity

› Excellent soldering properties

› Sinterability
› Surface coating properties

› No contact resistance between copper and aluminum

› Highly malleable, easy to fabricate

› Impact extrusion possible

› Weight and cost advantage compared to pure copper


Your contact:
Christian Mücke
+49 2377 917-413