Nitrogen-Alloyed Knife Steels

Revolverrodger said:
The LC200N knife you made for me is holding up well !
It’s a good steel option
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Yea Colin makes a good blade, especially the choppers. I like seeing all those big blades he grinds ShannonSteelLabs ShannonSteelLabs on IG.

If money is green, I don't see why Nitrobe77 and Vanax couldn't make a chopper, it's surprisingly tough but strong and stain proof. Understandably it would be very Expensive to make a chopper. I think it's difficult for people buying customs that don't make them to really grasp the expense of these powdered nitrogen steels.

It's a BIG reason why you may never see a nitrobe77 or Vanax knife made by Spyderco or Benchmade. Economically it might just be a custom knife steel that only small batch artisans make knives out of.

Another limiting factor is also the thickest size I've seen in Vanax is ~.180"
Nitrobe77 only comes in .125"
So the Nitrobe77 is too thin for a hearty chopper.
 
Larrin said:
In this article I cover the basics of nitrogen-alloyed knife steels, such as:

How is nitrogen added to the steel?
What does nitrogen do to steel?
How does nitrogen improve corrosion resistance?
Which nitrogen steel has the best properties?

https://knifesteelnerds.com/2018/09/17/nitrogen-alloyed-knife-steels/
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Another great article! I am very happy to see terms I previously didn’t understand like Electro Slag Remelting. From the name my first guess was always that they were somehow remelting the slag itself to extract something useful from it.
 
Sorry I’m a little late but cryo directly after the quench is the best way to eliminate retained austenite. Doing more in between tempers is just overkill.
 
Revolverrodger said:
But you also decrease toughness that way correct?
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Quote from Larrin's Cruwear/Z-Wear article, Cryo vs No Cryo
"Somewhat surprisingly there is little change in toughness by using cryo, regardless of length of time. Due to variability, however, if there is any “real” difference in toughness the resolution of the test may not be high enough to tell without more repeated specimens. However, there was an increase in hardness with cryo so using the liquid nitrogen treatment led to a higher balance of hardness and toughness. Because of the overwhelming amount of research showing that cryo tends to lower toughness somewhat means that we probably can’t take this result as a hard and fast rule. Perhaps the retained austenite in the non-cryo version of Z-Wear didn’t have the right level of stability to improve toughness or there was too little of it to make much difference."



https://knifesteelnerds.com/2018/06/04/toughness-testing-cru-wear-z-wear/
 
Interesting to see that the toughest steel currently tested is a stainless steel
I would love to see the toughness rating of basic carbon steels like 5160 and 80crv2 who are said to be very tough
 
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