I haven't tried that with any knives, but if you try that with S30V I think there's a decent chance you'll find some edge chipping (will vary according to grind and hardness of the specific blade, obviously).THG wrote:One cool thing about ZDP-189 that I've noticed is that if you smack the edge on something hard, it's not going to give you a dull spot. I've smacked the edge of my ZDP Delica on a metal dumpster a couple separate times on accident, and both times I looked at the edge and found no damage. When I did the same thing with VG-10, there was a dull spot that took a while to get out.
In all, I think next time I choose a knife, I'm going to get either VG-10 or S30V.
I agree with this. S30V seems to be toothier. If I had to pick one it would be s30v. S30V's edge holding is more than enough and I like the stainless and toughness qualities. So far it's my all around favorite in a folder, but I just got CTS-XHP so we'll see.Joshua J. wrote:S30V is...
More rust resistant.
Less expensive (but not by much).
More wear resistant.
Less rust resistant.
Harder (this is really only important if you want to sharpen at really thin angles).
Both are among the best performing steel types in the world.
If you can sharpen VG-10 or AUS-8 or any other steel, you can sharpen ZDP-189. It's not "harder;" it just takes longer. You might say that it's "less forgiving" if you're not accurate in your passes. Since it takes longer to sharpen, you need more consistency in your passes to develop your edge; you have to be more precise. If you're only getting the edge say 80% of the time, it's going to take a lot longer to make up that 20% you're messing up. On some softer, more wear-resistant steel, metal gets taken off easier, so if you're making some inaccurate passes, they'll get corrected easier (faster.)chuck_roxas45 wrote:maybe I'll have to give ZDP-189 a try. My modest sharpening skills are what's holding me back. I'm afraid I can't get it back a good edge if I get it dull.
Actually, since the time I have posted that, I've made another observation. I was cutting some glue off of another knife's blade (flat part of the blade) using my ZDP Delica. I didn't use heavy pressure or anything, but I was slicing it (it was the hot glue stuff.) Well I looked at the edge under light, and there was a huge shiny spot, and it was dull.JNewell wrote:I haven't tried that with any knives, but if you try that with S30V I think there's a decent chance you'll find some edge chipping (will vary according to grind and hardness of the specific blade, obviously).
Those to steel are in different leagues. ZDP189 for 5 years was best steel and only this year Syderco introduced first production knife with something better then it - CTS-XHP.ssmtbracer wrote:What are the pros and cons of these two steels and how do they compare.
Where can I find the full results for that test.nozh2002 wrote:Those to steel are in different leagues. ZDP189 for 5 years was best steel and only this year Syderco introduced first production knife with something better then it - CTS-XHP.
CPM S30V is average level steel. It was created when cuttlery industry refuse to switch to CPM S90V when Crucible stopped production of CPM 440V and was over promoted as a best of the best among the bests, while only better previous medium level stainless steels like 154CM and of course behind many top steels. Edge holding is pretty average average - 16th place among 34 tested.
ZDP189 is Japanese and not available for many manufacturers who like to have high profit. Only Spyderco offers it in production, but I guess not for profit but to give us access to best steel. Edge holding is very good - 4th place.
CPM S30V is better to machine and cost less, for everything else it is behind ZDP189.
I learned that in real life there is no really compromises in different properties, except price. ZDP189 is harder and tougher then CPM S30V (at 65HRC), it is as easy as CPM S30V to sharpen and as stainless as CPM S30V. There is no other differentce but cost and availability.
P.S. Demonstration of ZDP-189 (65HRC) toughness.