Working with CPM154CM

Phil,
My apology, I read your response....and a friend whom I respect alot and who respects your knowledge alot, just called.

I would like to deep fry, lightly breaded, the crow, before eating it...OK? I do like your thought about garlic, salt and pepper before frying.....

Phil, sincerly, no offense intended....I got it!. I understand that CPM D2 may or may not be a "soon to be" offering.... and understand that you were, or are, leading in the testing of it.

You made it sound so "matter of fact" I thought maybe it was a misprint.

Thank-you for being kind in your response!
 
Thanks John, no problema. I was in the right place at the right time and snagged a piece of the steel to play with. I don't think I have been designated as tester but will certainly report on what I find out. So far all I can say is that it grinds soft about like CPM S30V or CPM 154 and it has a very snappy heat treat. Phil
 
Sorry guys - we have not been pushing it because we like to get feedback before seriously advertising or promoting. Thus far feedback has been good and we do have some available if you are interested.

Later

Scott D
 
Why not stick to the recommended 1900-2000 F ?? Going higher gives you more retained austenite and going lower doesn't give the fully strengthened matrix as it doesn't dissolve as much carbides .
 
right mete i was jsut not sure about the hardness as with cpm154 it gets alittle harder in the cpm mix as oposed to the 154cm batches

larrin i was asking phil and scott because they have used the steel or are working on it and may have had revised data sheets for it
 
mete said:
Why not stick to the recommended 1900-2000 F ?? Going higher gives you more retained austenite and going lower doesn't give the fully strengthened matrix as it doesn't dissolve as much carbides .
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Are you speaking of CPM154 or CPM D2, mete? I believe Larrin's numbers were in regards to Butch's question about CPM D2.
 
Yes I was talking about CPM-D2. You can get Phil or Scott's response but all it is is D2 that's gone through the CPM process.
 
Sorry,it got confusing when you switched steels in midstream !!! The point is that the higher you go for hardening the more retained austenite you get....Hardening temperature for D2 is 1800-1875 F .
 
But many makers like making with CPM 154 more than 154 CM ( American ATS34).....Is CPM D2 that much better from a maker's point of view to work with than D2?
D2 seems to me, non-technically speaking, to take almost a "vicious" edge, and holds it real well.....Is CPM D2 better than that, or is it from a "working with it" point of view rather than a finished blade ( and in my case, spring on a slipjoint) point of view.....
I hope I don't sound dense....but am real curious)
By the way, Phil, marinara sauce , a few clams, shrimp, some good pasta, and a cheap but dark Chianti, along with the crow with plenty of garlic and some moderate salt and pepper....is pretty good....just remove the feathers first, skin it....and if you didn't shoot it from more than 500 yards away with a CCI 22 long rifle hollow point, you shouldn't have such a delicacy...then fine...I got more BS than you.....I hope all are smiling......

Seriously, is this CPM D2 hot stuff?

I have a bunch or 154CM, ATS34, S30V, springs, blade "blanks"and a number of stainless and non-stainless Damascus blade "blanks" already heat treated and ready to hog/ outline grind......
Should I be concerned?
Thanks,
Well-Fed, a/k/a,
 
The CPM process improves heat treatment response, corrosion resistance, finish-ablity, quality of finish, toughness, edge holding, and reduces the grain size and carbide size. The only debatable one is edge holding, though I would expect the same results Phil experienced between 154CM and CPM-154 with slicing rope to hold up with D2 vs. CPM-D2. The edge holding probably increases due to the carbides being more effective in a thin edge when they are smaller and more evenly distributed.

Edit: I forgot to add that smaller carbides considerably increases adhesive wear, which would help with springs in slipjoints.
 
John, I have wild turkeys here and if you want to compare that meat to crow come on out for a visit. Larrin and others-- I posted what I have found so far on CPM D2 on the Testing section. Yes it looks like edge holding is in the same general class as CPM 154 at the same hardness, based on just a little bit of cutting. Where does it fit in and for what application? that is the interesting question. I think it will depend on the corrosion resistance. Phil
 
Calling 154 CM American ATS 34 is getting the cart before the horse. Crucible developed it originally as 440Mod, then named it 154 CM. ATS 34 is the Hitachi copy.
 
Steve Hayden said:
Calling 154 CM American ATS 34 is getting the cart before the horse. Crucible developed it originally as 440Mod, then named it 154 CM. ATS 34 is the Hitachi copy.
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I've noticed some performance difference between 154CM and ATS34, so I consider them separate steels now despite the somewhat similar compositions.
 
I've used a bit of S30V and it was OK, but a major pain to sharpen. I used to use ATS-34 for the few stainless I did, and it worked good. IMO, if I just had a choice of ATS-34 or S30V I'd go with the ATS-34. CPM 154 is the best of both worlds, holds a good, fine edge, for a long time and is pretty easy to sharpen. I still prefer a forged blade, but if it's got to be stainless I've found nothing better. It's edge holding isn't quite what S30V is, but it's tougher, and can be sharpened without a hand grinder and diamond wheels.
 
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