cpm420v vs. cpm440v. vs.talonite

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elim

Joined
Dec 6, 1999
Messages
85
i'm looking for a very good steel for a utility skinning knife.i would like a high hollow ground drop point at 3 1/2".what does every one think of these steel? i am leaning towards 420v.has any one experimented with heat treating and cryo treating these steels?
 
I have worked with all 3 of these materials. All are a BIG step up from ATS-34 or 440C. Of all three, I'm the least impressed with Talonite, because of the softness of the material and the high cost. Also, QC from the supplier-I have heard of several pieces that came with microcracks.
440C should be a bit easier to sharpen in the field than 420V. Hard to say difinitively which of these materials will hold an edge the longest-probably 420V. You need first class heat treatment on both of these steels, and, full cryo treatment in LN2 if you are to realize the benefits of these materials.
For what you want, any would probably be fine.

Good Luck,

RJ Martin
 
I have used the 440-V and of course the Talonite, I have 2 nice bars of 420-V, but havent used them yet. According to one knife writer and tester, the Talonite smoked the 440-V in cutting cardboard day after day. I dont know how it would compare to the 420-V though. The main thing with Talonite as RJ has mentioned, is to not grind it too thin. A .020 secondary edge on a 3" or 4" knife works very well.

RJ, I havent heard of any Talonite with cracks at all. Ed Schott sent one piece back that had a rough finish which we surface ground and there were no cracks or inclusions in it at all. If there has been any material with cracks I would be glad to replace it if I know about it!

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www.simonichknives.com
 
Hello,

I to have had no problems with "Cracks"
or anything else regarding TALONITE, all the material i have recived has been Just fine. And as far as it being to soft, I havent had a problem with it.

I like the TALONITE and will continue to use it, Because it cuts GREATTT!!!!


my .02
Allen Blade
 
because of the way talonite is made...it seems irrational that it would have any cracks in it...plus it isnt super hard so i dont understand where this idea came from.. all the stellite 6BH i have seen is super clean and very strong...i heard the rumor again last week that crucible is stopping production of 440V in favor of 420V..420V is great steel...it is also no fun to grind.

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http://www.mayoknives.com


 
Hello!

elim - i suggest trying a full convex grind if you use talonite. This way you can have a very sharp edge and it won't be ground too thin. Imho it is the best universal grind anyway.

Achim
 
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