If you think about scrapping them think my way. When I weld up angle iron fixtures and such I don't give a whit as to how old the rod is as long as it has flux still on the rod. I don't dry them either. Aint like I would be welding a ship that might sink or a gas pipe line that might pop. (:^D
Weld a coupla plates and break them. Bet you will find that they will do anything you will need them to do as is.