how to tell the difference?

Start with - Ferrous which mean "magnetic" and Nonferrous which means " not magnetic". Then sort Ferrous material by type. Now do a search on here using terms you're interested in. You might start by looking over some posts and threads of mine and CAS come to mind right off. Particularly - look in "Tricks of the Trade" section. I think that's where I posted the list of Ferrous and Nonferrous metals and how to prepare them for sale.

(The first "Do a Search" post)



Here you go: http://www.scrapmetalforum.com/showt...-for-Beginners