Once upon a time, and not really all that long ago, 154CM and ATS-34 were considered super-steels! I had a working bowie made in ATS-34 about 30 years ago, it's never failed, and it still gets sharp. Is CPM-154 better? Of course. Doesn't mean my bowie is going to suddenly experience catastrophic failure simply because there's a better steel out there. VG-10 with its cobalt addition was high-tech, 40 years ago. It's still an easy to sharpen alloy, one that gets screaming sharp, and it holds an edge acceptably well, for most people.
I think it's only fair to point out that while 52100 is considered by many to be a super-steel in the carbon-steel realm, it's a very simple alloy that has been around for more than 100 years. It was when bladesmiths began forging it into knives that seemed almost magical in performance, thinking late 70s, early 80s, that most people heard of it for the first time. Not going to look for the info, but I believe it was Ed Halligan who really got that train rolling. And 15N20 was hardly ever used in knives until it became popular as one of the alloys used in forging damascus. 40 years ago, it seemed most of the smiths I was talking to only used 15N20 for contrast in their damascus blades.
The older steels are not obsolete, just not popular.
Blade steel is one of the last specs I care about. If everything else is done correctly, heat-treatment, grind, edge geometry, etc, I can usually make up for any deficiencies, real or imagined, simply by adjusting my cutting technique. And if the knife I have isn't up to the job, I MUCH prefer to procure the proper tool to perform the task at hand most efficiently with the least amount of effort, and preferably the least chance of dying from complications of accidental death or dismemberment(it's more common than you might think. I'd say check it, but you know I'm right). I'm not exactly a 'work smarter, not harder' kind of guy, I'm just lazy. But I'm good at it, guess there's not a lot of difference.....
I think it's only fair to point out that while 52100 is considered by many to be a super-steel in the carbon-steel realm, it's a very simple alloy that has been around for more than 100 years. It was when bladesmiths began forging it into knives that seemed almost magical in performance, thinking late 70s, early 80s, that most people heard of it for the first time. Not going to look for the info, but I believe it was Ed Halligan who really got that train rolling. And 15N20 was hardly ever used in knives until it became popular as one of the alloys used in forging damascus. 40 years ago, it seemed most of the smiths I was talking to only used 15N20 for contrast in their damascus blades.
The older steels are not obsolete, just not popular.
Blade steel is one of the last specs I care about. If everything else is done correctly, heat-treatment, grind, edge geometry, etc, I can usually make up for any deficiencies, real or imagined, simply by adjusting my cutting technique. And if the knife I have isn't up to the job, I MUCH prefer to procure the proper tool to perform the task at hand most efficiently with the least amount of effort, and preferably the least chance of dying from complications of accidental death or dismemberment(it's more common than you might think. I'd say check it, but you know I'm right). I'm not exactly a 'work smarter, not harder' kind of guy, I'm just lazy. But I'm good at it, guess there's not a lot of difference.....
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