8Cr18MoV, ever heard of it?

D

DavidDavidson

Joined
Oct 29, 2016
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Just got an assisted opening tac-force blade yesterday and it's supposedly made out of 8Cr18MoV steel; 'Desert Infantry' model, same as their 'Infantry' model but with the scales a tan colour rather than a black colour, I'd have preferred the black scaled model though it wasn't for sale on the site I normally use, the knife was the nicest out of the lot and half price too, it was also the only one to be made out of 8Cr18MoV whereas everything was 'stainless steel' which, due to the low price I'll assume was 440. Since the firearms laws in the UK are stupid in my opinion I only hunt (using a slingshot, which despite their deceptive power (someone took down a grizzly bear with a slingshot loaded with an arrow) aren't even considered 'offensive weapons' unlike knives (as well as a million other things; you now even have to prove you're over 18 to buy butter knives over here) and trap small game (namely rabbits) and go out into the Mourne mountains with a friend or two and set up camp when I feel like dropping off the grid for a few days or a week and usually set up shelter there, though being in the outskirts of Belfast it's a fifteen minute walk until I end up in open country and fields, one of which has plenty of rabbits, so I only use my blades for gutting small game and bushcraft which is why I've not invested in a very expensive knife thus far, but I digress this is becoming an introduction, not a simple question.

Has anyone ever heard of 8Cr18MoV steel? If so, what are it's properties? I've not really put the blade through it's paces yet, or even sharpened it after it arrived since it came razor sharp, which is somewhat unusual. Usually knives shipped around the UK can't even cut paper, this had no issue popping hair off my arms, and it's not even got a mirror edge. If anyone knows anything about this steel let me know. I've tried to get as much information on 8cr steel (I figured the numbers were a ratio of some sort though still came up short) I'd be much obliged.

Cheers

--David Davidson

PS: I hope I got this in the right area of the forums, I looked around to see if there was anything more specific on blade steels but I couldn't seem to find one. Sorry if this is in the wrong place and if so could the moderators please move it.
 
8cr13mov is a common Chinese nomenclature and is very similar to 440a.

A bit less chromium and molybednum then 440a, but a tad bit of nickel and vanadium added in which offsets the difference for all intents and purposes. It's a common budget knife steel used in Chinese imports, and performs adequately enough if given a proper heat treatment from a quality manufacturer.

The 13 represents chromium content, so 8cr18 would be chromium content around the 18% level, more in tune with 440 series steel which is 16-18%.
 
strategy9 said:
8cr13mov is a common Chinese nomenclature and is very similar to 440a.

The 13 represents chromium content, so 8cr18 would be chromium content around the 18% level, more in tune with 440 series steel which is 16-18%.
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Yes. In the 440 series, 8cr18 would be roughly 440B.
 
I've never actually seen 8Cr18MoV steel on any the 100+ over chinese knives I own. Lots of 8Cr13Mov, 7Cr17 and 9Cr18Mov, but never 8Cr18MoV. Assuming that the labeling is legitimate and not erroneous, it would be a decent value-grade steel for a knife blade.
 
knarfeng said:
Yes. In the 440 series, 8cr18 would be roughly 440B.
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Hey Frank, would you happen to have exact composition? I don't have 8Cr18MoV in knife steel database, and can't find anything like that on the net either. I've emailed Ahonest Changjiang about it, but I suspect nobody will answer it till next week, even if they do make it.
 
The knife is labelled 'first production run' so it could be a mislabelled 8Cr13MoV knife since an 8 sliced in 2 makes a (somewhat odd looking) 3 and it was designed in America but made in China so I could see that possibly being a print error as not much is known about 8Cr18MoV. Someone was saying that the Cr stood for carbon content though I always figured the letters were the periodic table symbols for Chromium (Cr) Molybdenum (Mo) and Vanadium (V) though you're naturally more experienced at this so I'll defer to your wisdom.
 
Thanks Frank, reasonable assumption :) Just we don't know if it actually exists.

@David - Cr is always for Chromium and in AISI and many other standards C is Carbon. THe only exception I can think of would be German Din standard, where X is for Carbon. E.g. X50CrMoV15 where X is carbon percentile multiplied by 100, i.e. 0.50% Carbon, but the rest is normal percentile.
 
I came to this old thread because it is stated repeatedly on the Sitivien ST801, and then I saw it's actually on the image of the blade.. Just reporting that.
 
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