ATS34 Heat Treat From Hitachi!

[Matt Harildstad]

I have posted a couple of documents about heat treating ATS34 on my website. These are documents Hitachi faxed to Brian Lyttle, and then he faxed them to me.

These documents contain Hitachi's recommendations for heat treating ATS34 in knifemaking applications, and compare ATS34 to D2 and 440C. I think many will find their conclusions interesting. I wish Hitachi would do a better job of distributing this info.



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[tom mayo]

this info has always been available....all the steel distributors will provide it with the steel they sell...i think the biggest problem is trying to hold the temps that are required with "hobby" type ovens....the big guys spend more money on their temp gages than these ovens cost....just an observation

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[Matt Harildstad]

Seriously Tom? You've actually seen these two documents before? Personally, I had never seen these two before, nor has anyone else I've ever talked to. All I've ever seen is the table of temperatures Rick Schultz published once with the one sentence recommendation that the lower range of tempering temps be used. The only recommendation I've ever seen from knife material suppliers is a double draw at 950F for two hours each.

As far as temperature controls are concerned, my tempering oven maintains +-1 degree F with no problem. The guy (Brian Lyttle) who does my heat treating maintains +-7 degrees on his salt pot.

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