sorry guys...

i think u have all got it wrong...

there is no such thing as allu being beter at dissipating heat than copper

it is just a myth that alot of ppl spread.

It doesnt need an engineer to know about material science and thermodynamics....
and not all engineers know about material science and thermodynamics...

but because of your inquisitiveness....yes

I am an engineer

and yes i did material science.



And i havent came across anything that says radiation of heat is based on material. The only variables are surface area, temperature difference, colour ....

Now try proving me wrong......Il be glad if you do

please bare in mind that there is no dissipation characteristic of a material....

but there is thermal conductivity and specific heat..


try to ponder on it....and youll get the idea

nicely explained...

Given 2 heat sinks with exactly the same design....one copper and the other allu.
The copper one will always be supperior except that it will be 3 times heavier


But ussualy we cant get exactly the same design when using copper or allu due the fact that both goes through different manufacturing processes.

U can easily find an allu hs made from a single chunk(extrution) but it would be rare to find a cooper hs made out of a single chunk of copper. They need to solder the fins to a base to get the surface area hence creating thermal junctions that hampers the conduction of heat.

Same goes to allu and copper radiators. Allu radiators are far more superior than their copper counter parts because the manufacturing process and technology of brazing allu radiators are far beter than brazing copper rads. Copper rads usses tin as its brazing filler and this creates alot of thermal junctions. Where else allu does not need foreign material as a filler but melts and clings together by itself at <400deg with the help of some brazing flux