1144 is the ANSI spec for StressProof, and StressProof's heat treat will
be ruined by a anneal cycle.


BINGO!

This is why I lurk on this newsgroup. I have a whole bunch of stressproof,
courtesy of an auction. So what is stressproof steel good for? I assume by
your comment that I machine it as is (A file will cut it so its not too
hard) Any recommended heat treatment options?

Karl