CPM 154 vs s30v

TotalDbag

TotalDbag

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Nov 3, 2012
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I saw a knife in both these steels, but the price difference wasn't more than $5. So now i'm curious, what's the difference? It was the Blur BTW.
 
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Not a Materials Science Engineer, but the differences seem to be in their properties as they both hold a good edge for quite some time. I own a BM 707 and Spyderco Sage in the aforementioned steels and love both in terms of edge retention.

You might want to change your title to CPM 154
 
TotalDbag said:
I saw a knife in both these steels, but the price difference wasn't more than $5. So now i'm curious, what's the difference? It was the Blur BTW.
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It will depend on final hardness of the steels, CPM 154 at 62 HRC will beat S30V at the normal 60 HRC, but CPM 154 is a very nice steel, fine grained and easy to sharpen.
 
Compromise and use S35VN !! Of the whole series I like that the best !
 
I like CPM154 better. I never have figured out what was so great about S30V? I have had several knives from several companies in this steel and never could get them really sharp. That is why I quit buy sebenzas. When they were BG-42 steel, they were very fine knives that would get razor sharp and hold the edge. When they went to S30V, that is when I quit buying sebenzas. S30V is about at the bottom of my list of steels that I like.
 
I think CPM154 is a very underrated steel. It would be nice to see more manufacturers release popular models with the Steel heat treated accordingly. I'm very glad to see Kershaw has rereleased a Blur with CPM154, I'd love a Military or Para2 in that steel.
 
I really like CPM-154, not so much S30V. CPM-154 can be, and often is, run very hard which often gives it comparable or superior edge retention to most S30V but it always seems much easier to sharpen. I've been very seriously eyeing the blur in CPM-154, but I've never had any interest in the S30V version.
 
If you can get a CPM 154 blade at 60-62 Rc and ground to about 0.015 it will outperform S30V by a few hundred %. At that hardness I don't know if I would call it easy to sharpen though.
 
knifenut1013 said:
If you can get a CPM 154 blade at 60-62 Rc and ground to about 0.015 it will outperform S30V by a few hundred %. At that hardness I don't know if I would call it easy to sharpen though.
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Maybe not easy but, while I've never counted strokes or anything, it seems steels like CPM-154 or CTS-XHP even at high hardness sharpen up more easily than steels with higher vanadium content like S30V or M390.
 
I keep hearing that CPM154 is great at 60-62, but what production blades are run that high? Everyone seems to run it around 58-60, which defeats the purpose.
 
lambertiana said:
I keep hearing that CPM154 is great at 60-62, but what production blades are run that high? Everyone seems to run it around 58-60, which defeats the purpose.
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You are thinking about 154CM, it's NOT the same steel.
 
RevDevil said:
I think CPM154 is a very underrated steel. It would be nice to see more manufacturers release popular models with the Steel heat treated accordingly. I'm very glad to see Kershaw has rereleased a Blur with CPM154, I'd love a Military or Para2 in that steel.
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Very underrated mostly due to people's confusion of thinking that CPM 154 and 154CM are the same when they really aren't, same alloy content, but different processes, and that makes them completely different with different reactions and properties, 154CM is an ingot steel while CPM 154 is the PM version.

Also CPM 154 isn't as readily available in large quantities that the major manufacturers can use like 154CM is.
 
I like both. S30V takes longer to sharpen (possibly due to larger carbides). CPM 154 takes a finer edge and less time to hone. Both will take a scarey edge tho', and I suspect that in daily use would be hard to differentiate.
 
Alberta Ed said:
I like both. S30V takes longer to sharpen (possibly due to larger carbides). CPM 154 takes a finer edge and less time to hone. Both will take a scarey edge tho', and I suspect that in daily use would be hard to differentiate.
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S30V has 4% Vanadium in it, and Vanadium carbides are harder than the Molybdenum Carbides at 4.00% that CPM 154 has so it will be somewhat harder to sharpen due the increased wear resistance of S30V.

They aren't bigger, both CPM 154 and CPM S30V are both PM steels.

154CM/ATS-34 are Ingot steels so they have larger carbides....
 
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