Thin stuff like washers, dryers, stoves, water heaters, computer cases, etc, etc, etc, is tin.
Heavy stuff like car/truck frames, rotors, drums, beams, etc etc is "steel", or iron. Some yards want to see 1/8"-1/4" or thicker to be iron.
The prices you got is about on par for what I get for tin and dirty aluminum.
Bookmarks