Heat Treating for Flex

Maybe I'm just a simpleton, but I make filet knives at 59rc because most of the ones I've made are used in the field and may be exposed to less than ideal cutting tasks and require sharpening in the field. I look to my geometry to provide flex, and don't give the rc much of a thought beyond what I outlined above. Queue convoluted metallurgy babble in 3.2.1...
 
bluntcut said:
*bold orange text* - only when steel has similar microstructure. While, Ferrite Matrix (annealed) is very different than Martensite Matrix(hardened), therefore this assertion is false.
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Elastic modules is controlled by the interatomic bonding forces and not microstructure. Therefore your assertion is false. Modulus only varies by a small percentage, certainly not on a level relevant to this discussion.
 
I knew this.

I've hung around BF long enough, that I've educated myself. Thanks Blade Forums.
 
as R. Landes pointed out in the link above going from 0,2mm to 0,4mm in the final bevel grind leads to 8 times greater stiffness and of course more force to deflect the section. all hardness will change is what happens as you approach max deflection. very soft will bend, very hard will break. so a thin edge will flex more than a thick one, hardened or not. might explain why most commercial fillet knives are 1/16" at the spine and have full flat grinds.
 
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