Nube is asking another dumb question over here...

D

DCutty

Joined
Oct 25, 2013
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52
Ok the title aside, I have to ask, does exposing a knife, be it a benchmade, spyderco, buck, or my forschner kitchen knives, to elements such as fire or ice make it a harder blade, post-production? Or is it set in its final configuration.

Didn't really see anything here on the topic and wasn't phrasing properly for google apparently, so any help is appreciated!
 
Cold no. If there is an existing fault in the steel the cold can bring it out (an inclusion or something could cause a crack to form in -40 weather...) But that was a defect to begin with.

Enough heat can affect the heat treatment of your knife. But in daily use it will never get hot enough for this happen. Now if your attempting to sharpen with powered equipment on the other hand...
 
99.999% of time in this case, heat exceed production tempered temperature will soften the blade. and ambient low/cold temperature won't change the blade hardness.

The other 0.0001% chance that the blade has too much RA (retained austenite) where appropriate thermal super low (such as dry-ice or liquid nitrogen) can change such structure to Martensite (hard stuff).

I pulled these % figures from thin-air, so take 'em with salt.
 
So it looks like the ICE thing is a non issue, I was inspired by JA Henkels Frio-dur process to ask that part of the q. I know it's done in production, just didn't know if it could be applied after
 
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