Firstly, the pins turned out very nice.
You can do a quick test on your steel by taking a small piece of the sawblade, heating it to non-magnetic and quenching it in water or oil. Then chuck it up in a vise and give it a solid swing with a hammer. If the steel breaks cleanly then you have steel that will make a decent knife. However if it bends excessively without breaking, you have mild steel which is essentially useless in making a blade.
(Keep safety precautions in mind, particularly eye protection while performing this test, but I'm sure you know that.)
Even if the steel turns out to be less than knife quality, it made for a good experience.
Good luck!
Brandon