MetalPrices.com by Argus Media publishes per-pound aluminum scrap rates. Aluminum scrap rates broken down by original source can be found on Scrapregister.com. For example, Scrapregister gives information for aluminum scrap originating from radiators, sheet metal, auto wheels and castings.
Additionally, aluminum scrap prices can also be found in the Wall Street Journal (physical or online versions). Aluminum scrap prices are routinely segmented based on the origin of the aluminum. When determining the value of scrap aluminum, it is necessary to determine whether there are additional metal alloys mixed into the aluminum or if the item being priced is pure aluminum.