s90v

S

salty141

Joined
Apr 22, 2007
Messages
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What is up with this steel is it a step before s30v or after? which is "better"( sharpness, edge retention ect.):confused:
 
I would pick S90V in general for long lasting slicing aggression and would want it at 60+ HRC. You also need oil+cryo on this steel to fight retained austenite.

-Cliff
 
Cliff, would you consider the use of S90V in one of the next Spyderco Military's an upgrade, or would 3V or M4 be a better option ?
Do you think there are even better options ?
And do you already have experience with CPM-D2, which is going to be in another Military model ?
 
I would put AEB-L in a knife like the Military as personally I see that as a harder working knife and would want the toughness and ease of grinding of AEB-L.

The real high carbide steels like S90V essentially just give you the ability to stay fairly dull for a long time. They don't offer a high ability to stay very sharp.

I have a CPM-D2 Military, it is currently out on loan and feedback will be coming in on it shortly vs D2 at 62 HRC, Mel Sorg.

-Cliff
 
Cliff Stamp said:
The real high carbide steels like S90V essentially just give you the ability to stay fairly dull for a long time. They don't offer a high ability to stay very sharp.
-Cliff
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How about the BG42 that is currently used in the Carbon Fiber version ?
For me, until now it seems to stay sharper for longer than the S30V version, which indeed looses it's hairpopping sharpness faster only to keep a little less sharp for quite a long time,

Thanks for sharing knowledge,
 
Many S30V knives suffer from lack of hardness so the edge rolls fairly easy. BG-42 is generally ran fairly hard so this isn't a problem.

-Cliff
 
I would put AEB-L in a knife like the Military as personally I see that as a harder working knife and would want the toughness and ease of grinding of AEB-L.
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S90V is plenty tough for me and as an end user the ease of grinding doesn't mean a bit to me.I wasn't aware you had gotten into making knives either. I've never had any chipping problems with my ( one only in this steel so far) S90V knife as I did with that one S30V knife I discussed here in the past. I've had my Socom Elite in S90V since late october of 2006 and have carried it, sharpened it, cleaned it, etc.

The real high carbide steels like S90V essentially just give you the ability to stay fairly dull for a long time. They don't offer a high ability to stay very sharp.
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A cynical answer.I've heard the same about S30V. It ( S90V) can be sharpened like any other steel to very sharp edges. It maintains it's sharpness better than most steels which I thought was one of the reasons you guys picked it as a control /comparison steel in the tests of the Friction Forged D2, as well as the CPM D2 in edge retention/ rope slicing.

Some people will need to refine their technique, or possibly buy different equipment to sharpen but it can be done, and done well, not too difficultly. IMO, It's one of the best folding knife steels on the market currently. Admittedly it's not for everybody but for me I can live with S90V and ZDP189 for all my folding knives if needed. They both are that good. Joe
 
What angles do you use?
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I don't take it down as thin as I do my ZDP knives. I'm not a hard use kind of person, and would consider myself in the light use category, and could probably go much thinner but I don't really need to.

I'm anxious to see the response and results from the S90V millie release. Like ZDP I think there will be people that decide it's not for them, and some that will fall head over heels in love with it. Joe
 
I say, no thanks to S90V. :thumbdn:

Never liked it; never have been able to get it as sharp as other stainless blades, and it's a bear to sharpen. Anybody looking for a nice, wear resistant stainless steel can do much better. Obviously Crucible feels the same, or they wouldn't have discontinued the manufacture of S90V.
 
I thought they discontinued S60V (formerly CPM 440V). Has S90V also gone down the tube?
 
Inintially Crucible make it to replace CPM 440V (CPM S60V), originally it was CPM 420V (now CPM S90V). But it is so good that manufacturers had to use more belts then usual so all industry reject it. Crucible was forced to make CPM S30V with much less wear resistance - it was step forward for the industry and everybody starts promoting it, but it was step back in comparison with CPM 440V which is 8 times more wear resistant (and CPM S90V even more wear resistant).

In general CPM S30V 8 times less wear resistant then CPM 440V and little bit tougher. CPM S90V is a real winner, it is more wear resistant then CPM 440V and much tougher.

It sharpens pretty good, as any high grade steel. Much less burr. Only problem that you need proper sharpening tools - Diamonds not ceramic. Vanadium Carbides which is 9% of CPM S90V harder then Aluminium Oxide so fo this reason Spyderco sharpmaker fail to sharpen it with Fine rods. Medium works perfect, but when abrasive size same as Carbides size - it is acually CPM S90V sharpen ceramic not vise versa. But when I switch to diamonds or Silicon Carbides - not a problem at all.

So CPM S90V is excellent steel, rejected by knife industry because they can not handle it, actually because it is way better then anything else.

Thanks, Vassili.

P.S. It is only microtech able to produce limited edition Socom Elite, which I was lucky to get. I also have two knives out of it made by myself.

P.P.S. Here the Crucible data:

CPM-06.jpg
 
How about s60v, thats what I had initially meant to ask, one of the Boker's in the new ag russell has it.
 
salty141 said:
How about s60v, thats what I had initially meant to ask, one of the Boker's in the new ag russell has it.
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It was introduced first and everybody were very excited about it. But in time knifemaking industry realize that it is hard to produce, require more belts etc, plus Crucible for some reason decided to upgrade it to CPM S90V. But it was very good - as I sad 8 time more wear resistant then CPM S30V. I was lucky to buy at local shooting range old Military with CPM S60V. However now it is only old Boker knives available.

Thanks, Vassili.
 
Danbo said:
Never liked it; never have been able to get it as sharp as other stainless blades, and it's a bear to sharpen.
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THat steel suffers as do many others from improper use. It is in the wrong knives with the wrong geometries. I did not know they had stopped making S90V though, was that just a typo on S60V?

The Mastiff said:
I've got no way to measure the angle it came with but that's more or less the angle it's still at.
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Everything I said in regards to the steel is sensitive to the sharpening angle and edge thickness. Any steel will be stable at an obtuse enough edge and toughness will also not be a problem with a large enough cross section. If you are a fairly light user then the other issues are not relevant either.

-Cliff
 
I thought S90V was replaced by S30V. ???

If I'm wrong, let me know. I still don't care for S90V though. ;)
 
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