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Copper heat sinks?

| Batteries, Capacitors, Heat Sinks
  1. #1
    ilyaz started this thread.
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    Copper heat sinks?

    Pulled these out of old Dell servers. The "copper" colored ones I presume are copper. What about the "stainless" ones? They look the same as the copper, I weighed them in my hand and they seem to be about the same weight. So copper too? I just thought that copper has always the same color.





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    take a file to each one of them. should tell ya real quick if they are copper or aluminum

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    deep file test to expose base metals if plated

    edit : aced again !

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    The ones that don't look like copper, but feel the same are plated. I think it is nickel or something along those lines. I always flip my stand grinder on and buff a little off so the scrap yard can see that they are indeed copper.
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    As your taking them apart the ones that feel the same just runn a screwdriver across it with a little pressure and you can see the copper quick and easy.

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    or sell them on ebay I get $5-10each for them all day long

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  12. #7
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    The different colors is called "anodizing"

    http://www.anodizing.org/Anodizing/w...anodizing.html
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    Check out these 3 I pulled two weeks ago from a projection tv

    http://i1222.photobucket.com/albums/...4-30182538.jpg

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    Quote Originally Posted by cummins View Post
    check out these 3 i pulled two weeks ago from a projection tv

    http://i1222.photobucket.com/albums/...4-30182538.jpg
    nice

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    The silver ones are copper with aluminum fins soldered with silver solder. Heat with a torch and knock the fins out. The other one is pure copper, but they use silver solder to hold the copper fins to the base. So goes as number 2.

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  19. #11
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    The ones that are silver colored are copper base and the fins are stainless steel unless they came out with aluminum that sparks when hit with a grinder.


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