in order Pic number 1,2,4,5,6, and 7 was found on the an old civil war hospital picture number 3 was found in the woods under a bunch of rocks they all test as iron though. and all appear to be farm equipment but i may be wrong
#3 appears to be a broken horse shoe, and #5 looks like a pair of ox shoes. #1 is in the shape of a draw knife, but looks way too thin for that. Personally I don't keep such rusty things although some find them interesting.
well they where some of my first finds ( with a bounty hunter pioneer 101{rip}) ill probably end up throwing them away or selling em for dirt cheap at the flea market. i found millions of railroad spikes though. a couple are over 100 years old