Hard drive covers can be stainless or aluminum. Use the method that Hoosierdaddy posted above.The 2 pics under the hard drives are finger boards and should bring between 4.00-4.50# as scrap, could be more on ebay. The pic under the finger boards are sheet aluminum. The hard drive case is cast aluminum. The heat sinks, the 6 in the middle and the 1 all the way to the right are cast aluminum the other 2 look like sheet aluminum. The ram should bring about 16.00# as scrap or more on ebay.