Separating Grades?

Seems like scrap yards grade thiere scrap diffrantly so it realy depends on your yard as far as sorting and grading. At the yards that I use, all the copper in the top pic would be #2 copper.From what I can tell the aluminum in the next two pics seem to be sheet aluminum but one piece in the bundle to the right of the pic looks like it might be extruded. I would have to see the end view of the square piece in that bundle to be sure. At my yards they don't care if it's painted or not. Also did you check the bottems of those heat sinks to see if they are copper or not, sometimes the bottem plate is copper, take a file and scrape the finish off and see what color it is. The aluminum in the bucket looks to be cast aluminum except the red pieces look to be sheet. As far as the steel goes someone else will have chime in on that. 99% of the steel I get is shred so it all goes as shred. Hope this helps, but the best thing to do is ask your yard how they want it sorted.