don't get cheated on comp heat sinks - Page 2

The heatsink thing is kinda strange when dealing with a small yard like we do most often. We had roughly 500 heatsinks to take in and thought first that they were all aluminum...We then discovered that the thick plate on the bottom was copper coated with something. So we hit each and every one of them with a grinder and took them in....The first yard we went too, our normal location, and they said that even though the whole thick plate was copper they did not consider it enough copper so they would only buy them as aluminum...Yeah, I don't think so....We took them to a larger yard that we deal with on our tin and they bought them as copper/aluminum radiators.

extrusion is the only aluminum we seperate the other aluminum grades are pretty close to same price. for us extrusion is worth seperating

approx value at our yard

extrusion - .70 - .75
clip - cast - painted - old .50-.55
aluminum copper mix 1.50 -1.60
dirty extrusion .50 - .55

our yard also posts prices online so its easy and convenient to know what to expect

http://fairsalvage.com/pricing_montcalm.html

Originally Posted by scrap lap

At my yard aluminum is aluminum is aluminum.

Only difference is clean or dirty..

Originally Posted by Mechanic688

Then your getting took,, Smile and wait for the kiss.

Can anyone tell me why a yard would care if the aluminum was extrusion or sheet?
I understand that extrusion cost more to manufacture but, it doesn't make sense that an entity which buys it with the intention of melting it down would care.

friday saturday and sunday as most of you know are my days of my full time job, but everyday i cant resist to scrap at least a little, anyway a while ago i was breaking down some of the computers i got this week and here is what i found, i scratched it first with my driver bit and seen pink grinded it so it would be easier to see in the pic

now i gotta dig the others out of the bucket

Thanks Cory for the pics I have some of those, didn't think to cratch the bottom, threw the whole thing in with sheet alluminum. Learn something new every day. Now I'll have to go through my shee and pull them out and check them. Whats the best way to get the copper off?

lol dont know, my plan is to start by grinding the screws off, probably a hammer will follow

dont grind them. Just push down on the top. the bottom has a small retainer ring. once the top is pushed down use needle nose pliers to remove the retainer ring and screw falls out