What I do. Only remove the copper loops from the ends in order to remove steel. This way you have #2 copper (the loops), Clean Cu/Alu radiator (no steel) and 2 pieces of steel to toss in with your other steel. As is here would be $.90 lb. Broken down is $2.21 #2 Copper, $1.24 copper / aluminum clean radiator and $.035 for the prepared steel. It makes sense for me to break them down. I would never try and remove all the copper from the aluminum. And for that aluminum I would only get dirty/furnace price $.20 so better to keep it on as long as its clean!
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