Instead of selling to a yard you may want to seek out people who do sculptures or statues for yards and landscaping.
Copper Head- I think I have an idea of where you are or may be close to....the Catskills region has a very large artistic community from what I remember. You may be able to sell metal ingots in that area specifically near Woodstock and Saugerties. Just a thought. Also antique shops may be able to use metals for repair work.