I have a large collection of rods that I got from a large company that threw them out rather than keep a msd sheet on them. Before I use them I cook off enough to do the job at hand in the heat treat oven and save the leftovers in a sealed container marked with the proper numbers. There were several 50lb containers in the mix that were opened including some 7014 and 7018 rods that should be heated. As someone else said, on a critical job I buy new rod for it.
John