420HC stainless vs 440

440C is a harder and more wear resistant steel. One of the reasons that Buck knives stopped using it was that their customer's had trouble getting it sharp. Buck first went to 425M, but this still gave their customers sharpening problems. Most recently they went to 420HC as their standard steel because it was easier to sharpen than 425M. That still wasn't giving their customers the cutting performance that they wanted so Buck went to a thinner hollow grind blade profile that they called Edge 2000. Now an average guy can get a high performing edge. It won't stay sharp as long as 440C, but for most people it will be sharper.

I am one of those guys who cursed the original 440C in Buck knives. I was good at sharpening, but no matter what I did it would never take the type of razor edge that I insist on for my knives. I developed a lifelong prejudice against the 440 series steels back in the 1960's. They are very heavy in chrome and to me take second rate edges. They are my least favorite. I even like them less than ATS134/154CM which I also dislike for the same reasons. 420HC is OK in a knife that I don't expect to stay sharp during the process of skinning an elk. For example it would be OK if I was only hunting deer.
 
My Benchmade TSEK had a 440C blade and I have no trouble getting it shave sharp. I start with a DMT diamond stone, go on to fine Sharpmaker sticks, and finish off with a cardboard stropping. It may seem like a hassel to some, but when it comes to sharpening you get out of it what you put into it.
 
Both are good, easy to sharpen steels, and both will take a cutting edge. I was particulalry impressed with my Old Timer's 420HC, it took a shaving edge very quickly and kept it even after a good bit of package opening.
 
both have real good corrosion resistance and would be appropriate for croc or shark hunting.
 
you'll never find a quality custom knife made of 420HC. ;)
 
420HC is a long way from any kind of super steel but it is servicable and works well for a lot of regular users. I have a BM with 440c and it holds a good edge. It holds a better edge than my BUCK 110 with 420HC but not by a great margin. It really depends on the heat treat. BUCK's 420HC is pretty good,others I really can't say. I like 420HC much better than 440A.
 
Grateful said:
420HC is a long way from any kind of super steel but it is servicable and works well for a lot of regular users. I have a BM with 440c and it holds a good edge. It holds a better edge than my BUCK 110 with 420HC but not by a great margin. It really depends on the heat treat. BUCK's 420HC is pretty good,others I really can't say. I like 420HC much better than 440A.
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:) thx you
 
Jeff Clark said:
I am one of those guys who cursed the original 440C in Buck knives. I was good at sharpening, but no matter what I did it would never take the type of razor edge that I insist on for my knives....
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Makes me feel a *lot* better hearing you say that, Jeff. I just recently drafted into service an old Camillus-contract Buck Cadet from my collection—a knife I've had since the mid-70's—and finally got around to reprofiling it to my liking. I never used the knife much because it was so difficult to sharpen (back in those days of my relative knife ignorance) plus I'd already become reluctant to work a slipjoint really hard, since a lot of 'em back then wouldn't hold up to all the stress involved in being heavily worked on a stone.

As it turns out, this is one super-tough slipjoint, and now that it's been reprofiled to ~12°/side is an absolutely ruthless cutter, with edge retention that's really pretty amazing.

I only wish now I hadn't given away the Buck folding hunter I had from the same era.

Anyway, point being, 440C with a good heat treat totally eclipses 420HC IMO.

Dave
 
It will be interesting to know when actually Buck stoped using 440C. It was introduced in 1964, but Edge 2000 is (I assume) from 2000.

Thanks, Vassili.
 
No comparison - 440c properly heat treated is up there with ATS34 etc esp. around water esp. salt water.
 
420 is better than 440 in instances where frequent or constant contact with sea water occurs.
 
I was comparing 440c with ATS34 as far as "sea water" is concerned. The reason 420 is better around sea water is because it has no carbon to speak of.
 
Daniel Koster said:
you'll never find a quality custom knife made of 420HC. ;)
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In a lot of cases you won't find a good production knife with 420HC Either.

Avoid Cold Steel's 420HC at all costs.

440C is still a pretty good steel.
 
440C, properly heat treated, is good stuff. Forget the 420 crap.
 
I had heard that another reason Buck went to 420 was that it was easier to stamp out the blades. 420 was "easier" to mass produce. Can anyone confirm this?
 
That is correct and Buck is not the only company to realize this benefit.
 
When you want to stamp out blades you need them to be as soft as possible in the annealed state. If all you have in your alloy is iron, carbon, and chrome it will be relatively easy on your stamping dies when annealed. Both the 420 and 440 types fit the bill. Alloys with molybdenum or vanadium are harder on your dies. Buck could have used 440A as well as 420HC for mass production. The 420 series are easier to take to a sharp edge and that probably came into play.
 
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