cpm-154cm cpm-3v cpm m4

A

aldo

Joined
Mar 7, 2005
Messages
20
looking for any info on these steels
I was really hoping for some catra testing info but any personal experience would also be great. THANKS!
 
All of these steels that you have listed are all made by Crucible Powder Metallurgy. Don't they have a website or any information available to their blade steel customers? IF anyone knows of a website for consumers like us to find out more about their blade steels I would certainly like to know about it.
 
AFAIK, the powdered 154cm is called simply CPM154 and I have never heard of CPM M4. Probably also the wrong place to ask since again AFAIK there is no Spyderco knife in CPM M4.

In very general terms CPM154 is simply a sintered 154cm which improves grain structure and the general characteristics inherent in 154cm. Its a stainless steel, with average toughness for a stainless steel good wear resistance and good hardenablility. CPM 3V is a non-stainless steel with outstanding toughness even for a non-stainless steel (in the range of the shock steels) but much higher wear resistance than other steels in is toughness class. Still a bit lower in wear resistance than CPM154 or S30V though.

That in itself should make it clear that at least CPM154 an CPM 3V are pretty difficult to compare to each other since they excel in completely different fields. While I am really excited about the Schempp fixed blade (10 in) that is supposed to come out in CPM 3V, I am not sure I would like something like the Caly Jr. in CPM 3V.

I hope Mr. Schempp can chime in and add a little bit to this rough classification.
 
Crucible has a very good website with lots of information. It is fairly easy to look up the specifications and product information on all of their steels. I don't think that they will have CATRA testing on their steels.

My friend Phil Wilson uses 154CM and CPM 154CPM and prefers the CPM over the regular 154CM.

M4 should sustain a thinner geometry than the other steels at a higher hardness, but it requires higher austenizing temp for heattreating ( special ovens for higher temp and more cost) This material would be good for folders but don't know if there would be significant preformance increase in a large blade, as the multitasking aspect of the large blade calls for a heavier geometry than a folder. M4 is not a stainless and has the possiblity of rusting like the 3V.
 
thanks for the help

who would you send M4 to for heattreat?I have heard alot about Mr. Wilson does he do heattreat work for other makers? I have some and would like to make a small fixed blade (3.5 to 4 inch blade) out of it. This knife would be ground thin a pure cutter.

I am sorry about posting in this forum but I was hoping to hear from SAL with some catra results. I thought that they might have tested some of these steels.

THANKS AGAIN
ALEX
 
You must log in or register to reply here.
Back
Top