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we have gone through over 1000 of our 2200 servers and I have saved all the cpu chips and ram. over the months I have noticed the difference in the color of the gold plating on them.
the older sun spark for instance have a deep rich gold color, the newer intel chips have a much more silver color to them.
I was wondering if any of you "home" refiners have tested the different color chips as to carat value of the plating. the same applies to other plating finger cards etc.
Last edited by EcoSafe; 04-14-2013 at 12:11 PM.
"anyone who thinks scrappin is easy money ain't doin it right!"
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The plating used in chips and pins is much thinner than in years past which could be the cause for the difference in color of the gold. Also the pins in older chips were plated with gold over copper. Today some manufacturers are using kovar under the gold plating. Kovar is made up of cobalt,nickel and lead which can be a pain in the ass to refine since now you are dealing with removing gold plating from three metals instead of just one.
As far as the carat value that depends on how pure the gold is. Its going to be hard to tell since the gold is plated on to fingers, pins etc...the gold foils have to be chemically stripped and then refined to remove excess metals. Even then it comes down to how well the home refiner processes the materials after removing the gold from solutions. From what I have seen is that any gold can be refined to 24 carat which is the purest of all gold. You can take 10 karat scrap and refine it to 24 karat if done properly. You will lose some weight from the 10karat but will be left with a much purer and more valuable 24 karat gold.
I hope one of the refiners here weigh in and correct anything that I may have stated incorrectly. I am just starting to investigate home refining and just scratching the surface of the knowledge that is out there.
Last edited by BRASSCATCHER; 04-14-2013 at 02:02 PM.
I won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them.” John Wayne-- The Shootist
NEWBS READ THIS THREAD ABOUT REFINING!!!!
http://www.scrapmetalforum.com/off-t...ning-read.html
Experienced Scrapper
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I did some sums a bit back and I reckoned you'd increase the value by about £0.80/gramme.Originally Posted by BRASSCATCHER
I may have got it wrong, I don't know how much it would cost you to do it, and the price of gold will probably have changed by now, but...
Metal Recycling Entrepreneur
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i have always been told the duller and darker the gold the more pure it is,,,,,,and if it is brighter and lighter in color it is of lower quality........i have no idea if that is true at all......its just what a couple old men have told me
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Its been 17 months since I responded to this thread and there is some updated info I will share with you all. ALL plating is 24K. The difference in color depends on how thick the plating is. Fingers,pins, mylars etc. Plating an item can only be done with pure gold. Anything less than 24k is gold alloyed with other metals and the percentage of gold gets less the lower the carat number.
10k= 41.7% gold and 58.3% other metals
14k= 58.5% gold and 41.5% other metlas
18k= 75.0% gold and 25.0% other metals
22k= 91.6% gold and 8.40% other metals
24k= 100 % gold and 0 % other metals
So to answer the ops' original question, all gold found in electronics is 24k but is plated over other metals. To recover the gold it must be seperated from what it was plated onto and cleaned of all base metals and refined.
Last edited by BRASSCATCHER; 09-08-2014 at 01:20 AM.
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