Multiple HT

[Nathan the Machinist]

I am going to file this away as a lab project for when the new shop is done. I will take a piece of CPM 154, grind a bevel on it, and cut it into four coupons. Then I'll HT the batch at 1900F. After the cyro and temper, I'll test one coupon for hardness and then check the grain size. I will redo the three remaining coupons and retest one, repeating until the results are graphed for 1-2-3-4 HT cycles. This should provide real use info for bladesmiths.

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Good idea :thumbup:

I'll throw a few test parts into the next batch too. I'll report back in a couple weeks.

Unrelated, I have arranged to get some liquid helium cryoed. I'm not expecting a lot, but we'll see.