CPM-10V Steel - History and Properties

Thank you for the article. Very interesting as usual.
S90V is stainless and, for the same hardness, appear to have a better TCC score than 10V. What is the toughness difference between the two?
 
I have only tested the toughness of S110V, which was 4 ft-lbs vs 10V’s 6-9. Crucible’s data also shows somewhat better toughness for 10V than S90V. S90V has about 35% more carbide so its toughness would be expected to be lower.
 
Thanks for another interesting read.

I'm interested in Uddeholm's Vanadis 10, partly because I have a knife in that steel at 65 Rc and partly because Uddeholm claims Vanadis 10 is the highest wearing of all tool-grade powder steels -- more so than 10V.
https://www.uddeholm.com/us/en-us/products/uddeholm-vanadis-10-superclean/

Your article says that Vanadis 8 was brought out in 2016 as an improved version of Vanadis 10, but I didn't see how it was improved.

Vanadis 8 has slightly less wear resistance (6-7 percent from your chart) than 10V, with about 30 percent more toughness at 60-61 Rc.

I was specifically wondering about the toughness of Vanadis 10. If it is the highest wearing, how is the toughness? I know you haven't tested it, but do you have a sense about it?

Uddeholm just says that Vanadis 10 has "good toughness." Interestingly, it shows Vanadis 10 has better toughness at higher hardness levels (above 63 Rc) than at lower hardness levels (below 60 Rc), which seems counterintuitive.
https://www.uddeholm.com/app/uploads/sites/52/2018/04/Tech-Uddeholm-Vanadis-10-EN.pdf

The toughness issue is interesting. ZKnives' editor says Vanadis 10 at high hardness has worked well in his knife use for years.
vanadis_10.shtml
 
Good read, thanks for putting it together, and congratulations on your book.

Interesting that despite its ability to maintain its edge, due to the fine grained carbides it’s relatively easy to sharpen.

Neat stuff.
 
Larrin said:
You can get the answers to all your questions here: https://10cvb23i6m43hrfmg3jb8mvm-wpengine.netdna-ssl.com/wp-content/uploads/2011/03/Vanadis-8-1.pdf
Click to expand...

Interesting. I don't see how Uddeholm can claim that Vanadis 10 is the longest wearing of the tool-grade powder steels. You kind of have to combine a lot of different reports, but it would seem that both Vanadis 8 and 10V would have greater edge stability than Vanadis 10.

So in real life cutting, vs slicing CATRA cards, it would seem that both 10V and Vanadis 8 would cut longer than Vanadis 10.
 
First I really appreciate what you, Larrin Larrin have put together, and congrats on the book.

I must say I’m a fan of 10V, need to find the right small fixed blade too. It’s definitely a combination of the steel and the Spyderco K2, which I love. It’s my all time favorite EDC/Work knife.

MolokaiRider said:
Good read, thanks for putting it together, and congratulations on your book.

Interesting that despite its ability to maintain its edge, due to the fine grained carbides it’s relatively easy to sharpen.

Neat stuff.
Click to expand...

I don’t see the “despite its ability to maintain its edge”. Quite the contrary I find it holds an edge very well, but I understand it’s all relative to what it’s being compared to. I know my K2 has a tall full flat grind which helps cutting ability, but it just keeps cutting long after I would have had to sharpen other knives.



Side note:
I do wish it was slightly more corrosion resistant though. Perhaps I should put the effort in to clean it more often and take better care of it, nah living a little rough around the edges is more fun.
 
3fifty7 said:
First I really appreciate what you, Larrin Larrin have put together, and congrats on the book.

I must say I’m a fan of 10V, need to find the right small fixed blade too. It’s definitely a combination of the steel and the Spyderco K2, which I love. It’s my all time favorite EDC/Work knife.



I don’t see the “despite its ability to maintain its edge”. Quite the contrary I find it holds an edge very well, but I understand it’s all relative to what it’s being compared to. I know my K2 has a tall full flat grind which helps cutting ability, but it just keeps cutting long after I would have had to sharpen other knives.



Side note:
I do wish it was slightly more corrosion resistant though. Perhaps I should put the effort in to clean it more often and take better care of it, nah living a little rough around the edges is more fun.
Click to expand...

I may have articulated that incorrectly.

What I think I’m trying to say is that while it does indeed hold an edge very well, it’s also relatively easy to sharpen.

I know you’re a big fan of the K2 and have put that big ole awesome Spyderco through its paces, and have been very pleased with the performance!
 
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