CPM154 vs S30V

If only for ease of sharpening,I prefer CPM154 slightly over S30V.
 
I like the looks of S35VN. Substituting Niobium for some of the Vanadium looks like a good move. Better toughness than S30V without giving up wear resistance.
 
I find it interesting that S30V with more abrasion resistance and harder grindability than CPM154, is tougher than CPM154 even though they scale out the same in toughness on Crucibles' chart. Learn something everyday. :thumbup:
 
Josh K said:
What do you mean? :confused:
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I have a 58 RC tested S30V Military coming here soon to cut rope with so we will see what the difference is between 58 and 60 RC.

I already tested a Military that was RC tested at 60 RC.
 
Ankerson said:
I have a 58 RC tested S30V Military coming here soon to cut rope with so we will see what the difference is between 58 and 60 RC.

I already tested a Military that was RC tested at 60 RC.
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When I said similar I was referring to the comparison to CPM154 @ 60 RC.
 
Josh K said:
When I said similar I was referring to the comparison to CPM154 @ 60 RC.
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Yeah it's close to that.

But take both steels to optimal hardness at 62 or better and things change.

The magic number for S30V is 60 RC, that's where the best performance starts edge retention wise.
 
jaymeister99 said:
CPM154 and 154CM have completely identical composition. The difference is how its made. CPM is Crucible Particle Metallurgy, CM is done by a conventional melt.

I humbly think it will be a long time for CPM154 to catch on. IMO I don't think the average Joe will really differentiate between the two for quite some time. It will depend on the marketing.

Remember back when knives were stamped "440" and not "440C"? The average person had no clue there was a 440A, 440B, and 440C.
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Yes that's what I meant--difference in how it's made, not as in two different steel types. :thumbup:
 
There is a great difference in hardness and wear resistance of various carbides !!!
Vanadium carbide is very high on the list .So if you use Mo you'll have less wear resistance than if you use vandium. That's why you rarely see knives with high vanadium having a highly polished blade !
BTW don't confuse grain size with carbide size. We want small grain size but also small carbide size .CPM gives small carbides but proper HT gives small grain size.
 
cziv said:
I just clicked them thanks. :) They aren't very big. The 3.5" blade knife is called a "tactical" folder. :)

BTW, is this a steel snob thread - just to clarify? :D
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IMO once you get beyond 440C and head into some of the more exotic stainless... dare I say maybe?:eek:

Sure they hold an edge better, but is that extra edge retention (and cost) more for our needs or wants? Lets face it, its the want!
 
jaymeister99 said:
IMO once you get beyond 440C and head into some of the more exotic stainless... dare I say maybe?:eek:

Sure they hold an edge better, but is that extra edge retention (and cost) more for our needs or wants? Lets face it, its the want!
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I think it depends on what the person is cutting.

I remember not that long ago (Years wise) that I had to sharpen a knife a few times a day when cutting cardboard.

With the better steels today that isn't needed you can just cut and not have to worry about the knife dulling to the point that resharpening is needed.

I am just speaking in general here about something that I have noticed.
 
CPM® 154 CM is a modification of 440C martensitic stainless steel to which molybdenum has been added. CPM® 154 CM has better corrosion resistance, better wear resistance and better hot-hardness than 440C.

...Can you say fancy name for ATS 34. :)

I have blades made from it but I would just as soon have 440C to be perfectly honest.
 
cultivateitnow said:
CPM® 154 CM is a modification of 440C martensitic stainless steel to which molybdenum has been added. CPM® 154 CM has better corrosion resistance, better wear resistance and better hot-hardness than 440C.

...Can you say fancy name for ATS 34. :)

I have blades made from it but I would just as soon have 440C to be perfectly honest.
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I think it's either conventional melt 154CM or CPM-process CPM-154. I don't think Crucible has a product that is "CPM-154CM" - ?
 
I'd opt for S30V from my experience. You can get back to a hair-razor status on just a plain-Jane Sharpmaker - given some time. Scarey sharp might be a new career. I only have a couple of CPM154 blades - Bucks (They seemed to have dropped it lately - the Bass Pro 110 being the only example I know of now available.) and they don't get a lot of use, so no resharpening experience there.

Why would you want to spend more on a custom maker's version of a large Sebbie than you could get a large Sebbie new for? The CRK warranty is legendary, too. Heck, my CRK/Wilson Combat 'StarTac' Umnumzaan was $430 delivered... keeper of the first order. Of course, if you want CPM154, you're out of luck!

Stainz
 
This post reminds me why I won’t buy any knife right now with “CPM154”.

Most people don’t know the difference between the powdered version and the regular. This includes dealers. I’ve seen too many knives for sale being tagged CPM154 that I know very well are 154CM.

If the blade isn’t marked CPM154, I’m not buying it.

Speaking of S30V, whatever Strider does to theirs is perfect. It’s easily the best performing S30V I’ve ever tried, much better overall performance than some of the other high end brands.
 
Stainz said:
Why would you want to spend more on a custom maker's version of a large Sebbie than you could get a large Sebbie new for?
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I don't think three makers got together just to rip off CRK There are a lot of titanium framelock knives out there.
 
IMO crucible will replace S30V with S35VN and CPM154 will take a back seat -- pure speculation . .
 
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