Toughest Knife in the world

Pretty impressive video! I wonder how hard the piece of steel was that he was hammering the knife into.

I wish I did some serious camping so I could justify buying such a knife. :)
 
who knows. Also, S30V isn't exactly the toughest steel, so if it can do that then some of the more common carbon steels should be able to do more. Of course his HT could be the deciding factor.
 
walkingman, where is that test/review, or was that just dribble from you:D
 
thanks man, I knew that with a little coaxing I could get you to find it for me. My search feature isn't good for somereason, I have search issues.:thumbup:
 
after seeing that thread, standing on one isn't much of a test.

and the fracture test prooved that it was quite hard and probably snapped before bending, which is a tradeoff in stiffness. . Good thing is that it did not break at the handle juncture which is where they typically break.

It appears a German magazine did a test and I wonder if it got translated
 
Impressive enough for me.

Suppose I'll have to keep an eye out for one (and force my wallet shut).

Eye candy only.
 
Cobalt said:
... if it can do that then some of the more common carbon steels should be able to do more. Of course his HT could be the deciding factor.
Click to expand...

Those metals are not that hard, cutting them up isn't demanding, note the hammer impacts were really light. If you go really light like that you can chop a 3.5" nail in half with a 1/16" full flat ground high carbon stainless blade. I did a bunch of them with a few Deerhunters years back. Nice blade designs, the handles look interesting.

-Cliff
 
I was going to get one for xmas but price was a little steep for the size. Does the triple quenching have anything to do with toughness of these specifically? I have noticed that other makers say they double quench their s30v blades but Trident is the only one I found that triple quenches.
 
I think it might just waste more fuel and add more things to go wrong. I've heard good things about multiple normalizing cycles of certain lower-chrome tool steels, but nothing regarding stainless steels or the act of multiple quenching.
 
He refers to multi-tempers on the site, does he also say multi-quenches? Multiple tempers are standard for high alloy steels which are not cold treated because you needed to temper the martensite which can form from retained austenite, and yes this can increase toughness.

-Cliff
 
Cliff Stamp said:
Those metals are not that hard, cutting them up isn't demanding, note the hammer impacts were really light. If you go really light like that you can chop a 3.5" nail in half with a 1/16" full flat ground high carbon stainless blade. I did a bunch of them with a few Deerhunters years back. Nice blade designs, the handles look interesting.

-Cliff
Click to expand...


true. I have done this as well and have left impacts on one part of the blade with heavy blows and no impacts on other parts of the blades with light blows.

Still if the force that it took to fail the knife was 3000 lbs that is fairly strong.
 
Generally the high alloy steels are exceptionally strong and anything with a thick cross section will take a lot of force to break. The number is somewhat misleading because in the thread there are comments that standing on it with 100 kg is obviously nothing because it took 3000 lbs in the bend test.

These are two radically different loads. Standing on it, or otherwise torquing the blade will allow it to crack with a *much* reduced load. Vice about 1" back from the tip and apply force to the back of the handle and the break point will be about 1/10 that of the bend fracture test.

What you need to be concerned about when getting a high strength is the effect it has on ductility and impact resistance, both sudden as in hit it really hard once, and long term, like a lot of little impacts, just dropping it, or batoning/chopping in the cold.

Ceramic for example generally has extremely high bend fracture results however few would argue for its use in tactical knives because it has little to no ductility and very low resistance to impacts. Even if it doesn't break at once when you drop it, are you really confident it didn't start a fracture crack somewhere?


-Cliff
 
You could heat treat the steels that this would be true, but generally not because of the fact that the chromium is free in the stainless and locked in carbides in D2 due to the much higher carbon percentage and lower soak temperature.

-Cliff
 
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