Greg,
I work with extruded aluminum quite often in my business. Specifically, it's usually lineal lengths about 2" wide, about 1/16" thick and varying lengths depending of the cut off scrap. It is factory painted however. To see a sample, go to my website
windowjim.com and watch the featured video. The material that I'm cutting in the video is exactly what I'm referring to.
Also I sometimes have scraps of aluminum tube 3/8" O.D. and 1/2" O.D. but not much.
Jim Snyder
(I'm new here)