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I have see this come up now and then, and it was tried on me.
thgere are two different types of conputer heat sinks. there are the ones stamped out if plate or sheet alu, and ther are those that are extruded.
it is easy to tell the difference, but many yards are not particularly familiar with e waste, and will many times try to count the extruded ones as eith plain alu sheet or cast alu. don't let them do this. you may have to educate them, a little concerning e waste.
Thanks for the warning, I will have to keep my eye on this the next time I take my aluminum in.
Make sure you take out the copper heat sinks. They may look like aluminum but they are copper plated with nickel. If you are unsure scratch test the bottom of the heat sink and see if you see copper.
The copper heat sinks that are plated with nickel will be very heavy..a good clue for you to check it.
Wow, even more to keep an eye out for thanks easy.
At my yard aluminum is aluminum is aluminum.
Only difference is clean or dirty..
Then your getting took,, Smile and wait for the kiss.Quote:
At my yard aluminum is aluminum is aluminum.
The one's on the cpu's are up to 70% nickle
Not to be negative but this seems unlikely... any link to proof? I'd love to be proven wrong and find out my heat sinks are worth a lot more.Quote:
Originally Posted by ScrapperNJ26
I have to find it again, don't have the link anymore.
What's the difference in payout, .10/lb? I don't move enough aluminum to have it make a noticable difference.Quote:
Originally Posted by Mechanic688
Where are these found? Computers? Servers? elsewhere?Quote:
Originally Posted by easyrecycle
I've been getting a lot of them in Dell P4 era computers. At first glance they look sort of like extruded aluminum, but tend to be a little shinier and the bottoms are a little thicker and definately more dense. The plating can be pretty thick so take a thick screwdriver or something and really scratch the bottom good. Go deep enough and you'll see that nice copper pink show through.Quote:
Originally Posted by IdahoScrapper
Often it is aluminum fin soddered to a plated copper base.
Here are a couple pics of one type I encounter frequently:
http://i1104.photobucket.com/albums/...1/IMG_2896.jpg
http://i1104.photobucket.com/albums/...1/IMG_2900.jpg
the photos that are posted above this post are dead on some copper type. I have some at the warehouse if I remember to take a photo of the diffident types...I just took a 55drum full of them in so don't as much as I did but hey..I needed the drum.
what do i do with my laptop heatsinks like this one
http://www.goldsource.com/images/large_2198_D5925.jpg
i have a couple and im not really sure how to process them
Cu+AL metal...I would not even spend the time to clean it. You should make around $1.60 (non-dealer) pricing.Quote:
Originally Posted by Filthy
thanks brother
I get the same most days for sheet and extrusion but my guy likes it separated at least. Sometimes there is a few cents difference. Only one time did I ever run across a heat sink with a copper circle in the center. Knocked it out in the vise.
How can that be newattitude ?? You say "my guy". I would understand if you had different "yard men" each time, but why would "your guy" change from time to time. All "you guys" have to do is google aluminum extrusion and you'll come up with plenty of pictures of extruded stuff....one, forget the name (Armstrong?) is a co. that makes heatsinks. You can print out a picture and take it to your yard. Don't let them get away with this nonsense, cause in my book, every penny counts.
I have no idea Dee, sometimes he will leave mixed aluminum together and sometimes he wants it separated. *Shrugs* Extrusion isn't always the exact same price at the yard I use, sometimes its a couple cents different. *Shrugs again*
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
Quote:
Originally Posted by scrap lap
Can anyone tell me why a yard would care if the aluminum was extrusion or sheet?Quote:
Originally Posted by Mechanic688
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.
Better grade of aluminum would be my guess although I have no idea what the grades might be. You look at a chunk of cast opposed to a nice piece of extruded and the extruded justs looks mo better.
KZ that's as good an explanation as any I've heard!Quote:
Originally Posted by KZBell
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
http://i1064.photobucket.com/albums/...s/Photo220.jpg
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
Here's some I have on hand. I scratched my head on this for a while and hit with my hammer for a while. I have a propane cooker, the type used to deep fry turkeys for Thanksgiving. So I had a stainless steel basket I put the heat sinks in and heated them until the solder melted. I grabbed the hot heats sink with plyers and wacked them against a hard object. The cu part seperated nicely. It gave me an idea of how to distroy the information on hard drive dics. I'll put up some photo's on that when I try it out. Mike
http://i597.photobucket.com/albums/t...s/P3100097.jpg
http://i597.photobucket.com/albums/t...s/P3100096.jpg
http://i597.photobucket.com/albums/t...s/P3100094.jpg
http://i597.photobucket.com/albums/t...s/P3100095.jpg