SAK steel

As it appears at the Victorinox web site:

"All Victorinox knives are high carbon, stainless, first grade, A-quality steel. They are tempered to a 55-56 HRC hardness for optimum edge retention".
 
Roughly translated, that means an easily machinable, pretty cheap stainless steel. I believe that the "system" allows the phrase "high carbon" to be attached to any steel with .50% carbon. The RC 54-56 is a relatively low hardness for a truly high carbon steel.

420? 440A? Actually, I kind of like 440A. It takes a heck of an edge, and is pretty stainless.
 
Steel in SAKs is made by Bonpertuis in France. I guess that the garde is T1, T5Mo or T5MoV. All of these contain about 0.5% C and 14.5% C. T5Mo T5MoV contain Mo and V as lettered.
 
I've heard that it is 420. Plain 420, not one of the more exotic variations. It works for them. These are very reasonably priced utility tools and as such, they do the job quite well. My most recent acquisition is the "Cyber-tool". A lot of fun and torx drivers thrown in as well. :)
 
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