Anybody Got HT Specs for The New CPM 154

I have two blades of it sitting on the work bench now awaiting my HT. The blades are not of my making.

RL
 
R.J.Martin ,I though has been working with the guys at Crucible, he should know. It can't be very different from the standard one.Does the CPM have vanadium ?
 
Roger.
I believe I read in a post by Jerry Hossum that they have added a small (0.2?)% Vanadium to the old 154 CM. This should make it very similar to RWL 34.
You might try contacting Jerry.
 
Thanks Steve. I read all that thread. Still inconlusive to me if there is a touch of vanadium but if so and in that small amount I am so far not detered from HT'ing as per 154CM / ATS-34. It is the tempering I most wonder about at this moment. With no other info I will probably begin at an absolute high of 600 F and perhaps go down from there.

RL
 
Scott, who seems to catch calls for Bruce at Crucible says to follow the current 154CM heat routine. I asked if this formula was the final deal and he said they haven't decided yet so it may change a little still. They are waiting for feedback. Until it is 'final', they don't seem to be too interested in creating a new heat recipie. Expect about 1 point higher RC after quench. Temper curve chart is supposedly the same. I'm still waiting on my new stuff to get here to try myself.
 
I spoke with the guys at crucible, they said it's the same as ATS34/154cm.
....sheesh is that cpm154cm expencive ! :(


Sean
 
Good Tracy. Just as I thought myself left to presume. My guess at absolute max 600 F temper should hold then. I believe I'll do primary temper after cryo at about 525 - 540 F. I'll report my final HRc here, tomorrow evening. In the mean time more info might come in that better helps us.

Thanks all.

RL
 
Roger,
I've got some of the early stuff that Jerry Hossom gave me but haven't heat treated it yet.
Here is what R
J Martin sent me. He as heat treated it-
The HT for the new 154 is preheat @1500, 10 min, soak 1950 for 20 min, press quench, freeze and double temper @500F. You should hit Rc61.5 this way, about 1.5 points higher than the old stuff. Piece of cake and very snappy HT response.

Kit
 
Thanks Kit and sounds good, except the preheat sounds a bit high but so what. I have so far done pretty close to what you share. My preheat was 1400 F / 7 minutes, austenitize 1950 F / 20 minutes (exactly as you said), one blade is in 300 F /1 hour snap temper now prior to deep cryo and the other blade is waiting for furnace to cool. I was thinking of tempering at about 525 - 540 F. Got all night to wonder about that since there will be the cryo wait. .. and oh yes, the first was plate quenched and so will be the second (last one).

Thanks again. I'll post HRc later tomorrow evening but I am aiming for 59 - 60 HRc and it sounds like it will end up closer to 60 (maker suggested he prefers 58 - 59). I can always re-temper to tweak down.

RL
 
I sure will. Because they are blades of another maker I will be limited to only being able to report my procedure and the hardness results. Even that though in this early stage of us using this new composition may be of some value in comparison to other heat treats.

One of the things I have rapidly become aware of in going full time is that it leaves little time to blue sky and experiment with stuff. Most of the time is spent making knives customers ask for and of the steels they request. I am pleased to have had the opportunity to be among the several first to HT this new steel.

RL
 
Excuses, excuses; and here I dropped a couple grinds just to do these for another. Must be nice to be settled in after all those years ;) .

RL
 
Hardness after first temper is 59.5 - 60 HRc. First temper was 545 F / 2 hours. In final temper now at 500 F. (blade thickness is 3/16 inch)

RL
 
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