What is this copper thing?

Originally Posted by billygoat

Look for a little sticker inside. I have one and the sticker says "Zn" so as far as I'm concerned it's zinc.

And I think your heat sink is a combination of copper and aluminum. At least that's what it looks like in the picture, but I can't be sure without seeing it in person.

No sticker but it does have letters/numbers protruding on inside and at one spot says Zn also.

Look for a little sticker inside. I have one and the sticker says "Zn" so as far as I'm concerned it's zinc.

And I think your heat sink is a combination of copper and aluminum. At least that's what it looks like in the picture, but I can't be sure without seeing it in person.

Any idea what would be aluminum? I mean for the size, it is decently heavy. And there isn't much coating on it