Thanks, that was the answer I was looking for. We received a batch of C46400 brass that was developing cracks rapidly. Stress relieving was one method suggested to us.
Thank you for the pointer to the magazine article, I'll check it out.
I looked at ameritherm's website, we are in the initial stages of testing the process. We have a decent machine now, just need to be able to process more than one at a time to get the cost down.