I dropped my CPM-4V Manix tip down on cement!!

I'd also like to learn more about the specifics of the hybrid carbide that forms from Tungsten and what else it does within the steel.

Here's the composition of 4V

View attachment 1357287

I can’t remember exactly which article of Larrin’s goes into it but essentially in HSS, tungsten forms W7C3 carbides that aren’t as hard as WC and VC carbides, also since tungsten is so dense you don’t get as many atoms since alloys are mixed by molar mass. Tungsten also isn’t the strongest carbide former and while its carbides are hard, you rarely see many of them.

Tungsten promotes hot hardness, some wear resistance and overall strength; keep in mind that it’s melting point is like 6700F, I believe second only to carbon.

Niobium and vanadium are the strongest carbide formers and make the hardest ones (VC and NbC); 3V Mod would be a really interesting steel that has the V replaced with Nb but it has never come to market.
 
First, as noted in other threads, I'm no more qualified than the next noob. However, to an extent, I have been accused by others of being an autodidact more than once and learning at a geometric rate, especially with complex dynamics.

I'm not trying to toot my own horn, but you did ask.

When I get mentally stuck on a subject, I'll stay stuck on it until I can figure it out.

Where I get my info:

I've literally watched every cut test video on YouTube, all of them, along with virtually every other related video I can find, the good ones more than a few times. Larrin's knife steel nerds website has gone a long way to providing insight and answers and his Patreon has a lot of good info too. This forum has been a wealth of info and I've lurked for longer than I've been a member. The same is true with the Spyderco forum.

With all kinds of wrong information out there, I have done some limited cut testing to prove/disprove various things and find a firm basis in reality.

Beyond that, what started it all, is my stubborn determination to use a knife at work. I'm in the furniture industry and the cardboard that's used is no joke. Its thick, dense, and very dirty. I'm sure some of it technically isnt cardboard. I'm not a "hard" user as I consider it, however I'm definitely a volume user with the amount cut in a typical day.

What I really want from this forum I'm not getting, except for once by Larrin when he called me out for being factually incorrect.

While I'm confident in what I believe to be true, I'm depending on people like you who've been around this industry longer to call me out when I'm wrong. I like debate and if I'm wrong I'm wrong. My ego isn't heavily invested.

I do however have the habit of speaking authoritatively, in which case, don't be shy... speak up if I'm wrong!!!

Fundamentally I'm here to learn and when I think I know what I'm talking about, I learn best through debate.
Spoken like a man of virtue with humility, ethics, integrity, and just good ole fashioned common sense!!... Thank you for your refreshing dialogue sir, I for one appreciate it and find it refreshing!!
 
Thank your lucky stars. 4v would be an absolute bastard to reprofile.
 
I wonder what it looks like now, since it's been four years since that fall.
Cement is really soft powdery stuff but such a fine powder that it would get into the pivot and so forth and would be really difficult to clean out without taking the knife completely apart.
 
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