How to cool (dissipate heat) LED in a sealed plastic housing

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Thermal properties of common metals -

Thermal properties of metals at a glance

Like a true flashaholic i’ve been interested in the different thermal properties of the metals used in lights these days. I understand most people have come to the conclusion copper is best followed by aluminium and brass then just about everything else. But I haven’t found an easy to read at a glance comparison between the commonly used metals. When comparing to copper even brass looks poor. But which grade of brass or copper. Some thermal characteristics can change quite a bit when alloyed wit…