Both the K18 and K20 can perform cuts that historical blades could not perform, and can withstand use and abuse that would destroy a historical sword. I would wager that either one of them could cut most swords into pieces
No doubt.
I posted about it before, that historians have actually tested historical swords (European, Middle Eastern and Asian), and a couple of striking things that stood out:
- edge hardnesses were all over the place, ranging anywhere from the mid-40s hRc, to generally mid-50s hRc.
- one of the tests I read about, was testing the consistency in the heat treat of various historical swords. They tested the edge hardness of several swords every 5cm/2" down the blade, and found that many swords showed variations in the hardness down the edge of the same blade.
- even with historical Japanese swords like tachi and katana, (which any sword enthusiast knows is differentially hardened, so the edge is harder, while the spine stays softer to better absorb impact without the blade snapping from being too hard/brittle all the way through), it's pretty rare to find edge hardness reaching 60 hRc. Most of the historical katana and tachi tested, topped out in the high 50s hRc (with the spine in the low 40s).
Nate's D3V is really in a whole different league for swords. His D3V is 60.5 hRc, which is already harder than just about any of the historical swords, but what REALLY blew my mind, was the K18 flex test video. Until that video, I had NO idea that D3V could do that and return to true.
No historical swords even close to that hardness, would survive that (also posted before about seeing an idiot with more money than brains/skill, permanently bend their 5-figure genuine Nihonto on a poorly angled cut in tameshigiri).
*** just an FYI, but Albion swords has a good reputation amongst sword enthusiasts for their quality, and historically accurate Western sword designs and construction. Their swords are flexible, and resilient and are very common in HEMA cutting competitions. They average about 54.4 hRc.
An old BF thread, that gives an idea, from ABS standards
https://www.bladeforums.com/threads...-read-this-and-tell-me-what-you-think.141810/
*** I tried to warn Nate how the K20 preorder would go. I don't think he believed me
P.P.S.
Nate, you really should tell Bennie to wear eye pro for some of these tests. All it takes is one high velocity bit of material to the eye, to make for a bad day.