You'll run into different rules and different terminology but almost always you'll be ahead separating types of metal into groups and and "all-metal" vs metal with nonmetal. Now some things really aren't worth separating when they consist of two or more types, but you'll have to make those distinctions, yourself. Yes, steel (or light iron) is different than "mixed metal" which may also consist of steel. Mixed Metal is just that - a mix of different types. If you can get the aluminum motors off fairly easily, then "yes". Price sounds about average.



Realize that there is a difference between Cast Iron and Breakable Iron. Sometimes, the price is the same and they may not care if it's mixed together. But if the price isn't the same and it's mixed together, you'll the the lower price for the whole lot. I've seen both those and Motor Blocks all have the same price and be thrown together one day and not the next. USUALLY, they'll tell you at the yard before you unload so you get a chance to separate stuff. But don't count on it.