Case True Blue Peanut

K

Killdeer

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Jan 27, 2026
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I'm looking at a new Case xx peanut pocket knife with a blade made from Tru-Sharp Surgical Stainless steel at 54-57 Rc, apparently a Case proprietary steel. Case says "Tru-Sharp sharpens and polishes easily and is enjoyed by collectors all over." I prefer vintage pocket knives with 1095 high carbon steel for the very sharp edge they take. Does anyone have experience with this steel that can describe its working characteristics?
 
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As a follow-up question, does anybody know when Case started using this steel. I'm looking at a 1980s vintage knife and would like to know the steel type.
 
think its 420hc steel. its on the softer side. super easy to get sharp fast. fine for the knives they make in it. I dont think you'll notice much difference between the case cv and it other than better stain resistance and the stainless wont hold an edge as long.
 
Killdeer said:
As a follow-up question, does anybody know when Case started using this steel. I'm looking at a 1980s vintage knife and would like to know the steel type.
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Case Tru-Sharp is 420HC. To my knowledge it always has been.
And they do run it on the soft side, just like Victorinox does. ~55HRC.

Note: 420HC is not an official alloy designation, so its exact composition can vary, depending on the steel maker. So I do not know the exact composition of Case Tru-Sharp. But they have identified it as 420HC in the past.
 
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