Ranking of Steels in Categories based on Edge Retention cutting 5/8" rope

Thanks. Looking at that section, these are interesting:

S90V - 460 - Military - 60 RC
CTS 204P - 420 - Para 2
M390 - 380 - Military - 61 RC
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First, the difference between the two Militarys is sort of surprising? I would not have thought that S90V would be that many cuts ahead of M390 at those HRC levels. Second, although the Para2 blade is not the same as the Military blade, I am also surprised by the difference between M390 and its Carpenter clone, 204P. Your thoughts???
 
JNewell said:
Thanks. Looking at that section, these are interesting:



First, the difference between the two Militarys is sort of surprising? I would not have thought that S90V would be that many cuts ahead of M390 at those HRC levels. Second, although the Para2 blade is not the same as the Military blade, I am also surprised by the difference between M390 and its Carpenter clone, 204P. Your thoughts???
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Not really surprising as S90V has a lot higher V Content at 9% over M390 at 4% and in this extended cutting (Coarse edge) it really shows the difference.

The 204P could have been harder than the M390 Military and or thinner behind the edge, I know the M390 Military was pretty thick behind the edge if I remember right.
 
In future tests, a measurement of how thick or thin behind the edge could be added... it might be helpful. Apples to apples, you know.
 
Ankerson said:
Not really surprising as S90V has a lot higher V Content at 9% over M390 at 4% and in this extended cutting (Coarse edge) it really shows the difference.

The 204P could have been harder than the M390 Military and or thinner behind the edge, I know the M390 Military was pretty thick behind the edge if I remember right.
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I have an M390 and a CTS 204P Para 2 and it seemed to me that the 204P took a little more effort to reprofile, even with diamonds. Maybe that batch ended up with a slightly different heat treat? Regardless, neither one of those steels are nothing to sneeze at.
 
Think about it, though...15 years ago ATS-34 was (pardon the pun) cutting edge. It's still great steel, but how far things have come. :eek: :thumbup:
 
Were you surprised that the K390 out performed the S110V? I guess that is what the added tungsten gets you.
 
Big Chris said:
Were you surprised that the K390 out performed the S110V? I guess that is what the added tungsten gets you.
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Given the knives, geometries and RC hardness of the knives, no not really.

I think if the knives were exactly the same and the same RC hardness they would be VERY close in performance.
 
Big Chris, The 3V knife of yours that Jim tested does not have a hardness given. Do you know or have a target hardness you were trying to hit with that knife? Also, are you doing any 4V yet?
 
nccole said:
Big Chris, The 3V knife of yours that Jim tested does not have a hardness given. Do you know or have a target hardness you were trying to hit with that knife? Also, are you doing any 4V yet?
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The target hardness on the 3V was 60. I do not have a tester but with the random blades I have tested is differing batches all tested 59-60 Rc.
I have been working with 4V a bit already. I have a slightly different heat treat I just did on a blade and will be handling it very soon for testing purposes.
I have also just started using some Z Wear. It works a lot like M4 but is supposed to have a toughness close to 3V, I think it is very similar to 4V actually. So far I am very pleased with both 4V and Z Wear. I am running them in the 63 Rc range. Perhaps when Jim feels up to some more testing I could get a couple knives in his hands.
 
Updated the hardness on the S110V Manix 2, came in at 62 RC.
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That is one impressive piece of production cutlery. Every time I think I've seen it all it Sal comes out with something that pushes the boundaries out further. I recall thinking that getting an S110V production knife at a tested hardness of rc 59 was a good thing and I bought two.

Big Chris, Z wear is a very clean, nice, powder version of Vascowear/Cruwear, CPM Cruwear/PD#1 etc. . It doesn't lose as much toughness as 3V over rc 59-60 and by rc 63 it should be tougher with more abrasive wear. I've never tried any of the steels at rc 64 but at rc 62 it is very tough, and has excellent edge stability for a high wear steel. It should come in between D2 and CPM M4 in both toughness and wear resistance. I had a couple Z wear Strider SNG's. I don't know anything about what heat treat or final hardness was used but I do think the steel ( CPM Cruwear and PD#1 also) make excellent hard use folders. Their attributes fit very well for this type knife IMO.

Joe
 
The Mastiff said:
That is one impressive piece of production cutlery. Every time I think I've seen it all it Sal comes out with something that pushes the boundaries out further. I recall thinking that getting an S110V production knife at a tested hardness of rc 59 was a good thing and I bought two.



Joe
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It's really good for a production knife, the performance is there for sure. :thumbup:

I would except some very good reports from people as they start to use them.
 
Added the Knifeworks exclusive Benchmade 810-1401 Contego in M390. :) :thumbup:
 
nccole said:
How many are they sending your way?
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Just the one I have, really nice knife... :)

It's like a cross between a CRK ZAAN and a M390 Military.... It's the way I was thinking of it while cutting with it.

Cut very well, will post a full review once it's all done.

ZT 0770 CF will be next....
 
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