Extruded Aluminum Heat Sink Profiles
The Multi-Purpose Alloy - 6063-T5
We offer a wide range of Extrusion sections that can be
machined to meet special needs. New Extrusion sections are being
tooled continuously and we invite you to submit your special
needs to us for matching to these new sections. If no match is
found we will be pleased to cut a new die at nominal cost.
6063 is a multi-purpose alloy that is most widely used for
architectural hardware and heatsinks because it is extrudable
into complex shapes and lends itself to anodized coating. The T5
temper provides sufficient hardness for ease of machinability. T6
is harder but requires water quenching causing warping of the
more complex shapes. 6063-T5 is the aluminum extrusion most
commonly used by R-Theta. 6061-T6 is sometimes selected by design
engineers to take advantage of the harder alloy but is only
readily available in bar stock since it is difficult to extrude
heatsink shapes in this alloy. The 6061 alloy also exhibits a
lower thermal conductance than 6063. For these reasons 6061
should be avoided.
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