Optimization of Blade Geometry & Grinds For High Strength & High Toughness Steels

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Karl H

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Apr 24, 2020
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I am curious to learn about any work that has been done to optimize the geometry and grinds of knives made from modern high-strength & high toughness steels, like CPM 3V.

It seems like a number of production companies have started offering high strength & high toughness materials in their knives, but haven't necessarily changed the geometry or grinds of their blades to take advantage of any increased strength or toughness.

So, I was hoping some of the forum members might be able to share any info on work that has been done to take advantage of better materials to get thinner grinds, without excessive edge rolling or chipping, for a given application.

Even if you aren't aware of any controlled scientific studies, I would be curious to learn about any designs that you consider to be well optimized, for a given application. My main interest is in medium sized fixed blades intended to be used for wilderness survival or bushcraft, but I am also interest in other applications.

For reference, here is a link to the crucible data sheet for CPM 3V, which includes a table that shows the hardness and toughness of CPM 3V and other similar steels.
 
Knives are evolved items.

Everything about them has been moving forward to optimize them for real world use.
 
Karl H said:
I am curious to learn about any work that has been done to optimize the geometry and grinds of knives made from modern high-strength & high toughness steels, like CPM 3V.

It seems like a number of production companies have started offering high strength & high toughness materials in their knives, but haven't necessarily changed the geometry or grinds of their blades to take advantage of any increased strength or toughness.

So, I was hoping some of the forum members might be able to share any info on work that has been done to take advantage of better materials to get thinner grinds, without excessive edge rolling or chipping, for a given application.

Even if you aren't aware of any controlled scientific studies, I would be curious to learn about any designs that you consider to be well optimized, for a given application. My main interest is in medium sized fixed blades intended to be used for wilderness survival or bushcraft, but I am also interest in other applications.

For reference, here is a link to the crucible data sheet for CPM 3V, which includes a table that shows the hardness and toughness of CPM 3V and other similar steels.
Click to expand...

Check out the Carothers Performance Knives sub-forum...Nathan is doing amazing things with 3V. There is even a Ask Nathan a Question thread if you have specific questions you want to ask.
 
Thanks for the Carothers Performance Knives referral!

I am quite impressed with the time and effort Nathan seems to have put into optimizing both the heat treatment and grinds for 3V steel. One thing that I find particularly amazing is that he sells light, medium, and heavy duty versions of his knives, which each have slightly tweaked thickness behind the edge and secondary bevel angle, depending on the intended application.
 
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