CPM-10V: suitable for large blades?

I do have a question for you Ankerson. Super wear resistant stainless steels have a reputation for lacking toughness. I'm talking about S110V and S125V and maybe even S90V. Now I know a high hardness S110V is supposed to be close to CPM 10V is wear resistance, but how tough is it? The OP referred to 10V as having D2 class toughness, is this true? And if so, how does S110V compare? Maybe 440c toughness?

And yes I know about the enormous difference between 10V and M4. But, I still love M4. Its a good fallback for me.

Well Farid made a Competition knife in 10V....

Those steels are tough enough if heat treated and tempered for expected use of the knives.
 
I just got some 10V blades back from Peters that were tested at 64 Rc. I am looking forward to finishing one of these to play with. I have read all of Ankerson's testing and that is what has led me to give M4 and S90V a try previous to this effort in 10V.

Looking at several data sheets 10V is listed with comparable toughness to O1 and O1 is used for choppers on a regular basis, so why wouldn't 10V work on a large knife? I think it would, you would just have to find a maker willing to work the stuff after heat treat and be willing to pay his price.


Chris
 
Wow, O1 toughness. Awesome.

How tough is 15v or Rex 121 then? I have heard it isn't worth the gain in wear resistance over 10V due to its lack of toughness.
 
Well Farid made a Competition knife in 10V....

Those steels are tough enough if heat treated and tempered for expected use of the knives.

How are you Ankerson,
CPM-10v is one of the best. I remember testing a competition chopper made from 10v at 61-62RC on some old copper pipe 15mm round and it did just fine and there was no damage to the edge.
DSC05483.jpg



http://www.youtube.com/watch?v=lcCjUOp5F2U
 
I just got some 10V blades back from Peters that were tested at 64 Rc. I am looking forward to finishing one of these to play with. I have read all of Ankerson's testing and that is what has led me to give M4 and S90V a try previous to this effort in 10V.

Looking at several data sheets 10V is listed with comparable toughness to O1 and O1 is used for choppers on a regular basis, so why wouldn't 10V work on a large knife? I think it would, you would just have to find a maker willing to work the stuff after heat treat and be willing to pay his price.


Chris


I think you will like 10V after the knife is finished. :D

Great stuff really. :)
 
After seeing that copper pipe, I'm pretty stoked. It's a pleasure to have such knowledge from Jim and Farid in a thread like this. My name is Chris BTW, and yes, I am apparently a thread hijacker. I may make a new one since the OP had his question answered and kind of abandoned this one.

Though I will admit that every time Ankerson talks about CPM 10V (or any A11, any steel for that matter) I just sit and wait for Vassili to jump in and claim Jim's tests aren't scientific and that ZDP-189 will hold an edge much longer.:rolleyes:
 
Vassili was banned quite a while back.

10V is not very tough, about the same as D2, which is about the same as some of the premium stainless steels.

15V and REX 121 have much lower toughness, but as the copper pipe test shows, it doesn't take much toughness for a knife to do something that appears impressive. There are large knives made from steels like S30V and D2, while L6, 3V, 5160, S7 and others have three times or more the impact toughness of those.
 
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