I have been mixing 6061 and 6063. Just noticed 1956 post saying that the 6063 pays a little better. Been getting $.60 or better for the two mixed, I have over 50 lbs. getting ready to sell some aluminum. Any one have thoughts on separating. I get much more 6061 and theres nothing to process as it comes from my aerospace contractors. The 6063 takes some work, mostly making sure ferrous hardware is removed. The 6063 that has paint on it I just throw it with the painted aluminum. Opinions and suggestions welcomed. As for being taken by a yard, I ask questions if it's not right by me and as Brandon said, not afraid to put it back on my truck. Some may not have those same options, as it all depends on your individual needs, quantity, quality of your scrap and available buyers.