Pelagic wrote: ↑
Tue Dec 03, 2019 12:29 pm
K390 outcutting REX45 despite REX45 being a few points harder seems feasible given the carbide situation. But s125v beating Maxamet despite a 5 point difference is very surprising to me, since Maxamet has a very high carbide volume. It's interesting to see such varying opinions and test results concerning the importance of hardness. In this case, hardness almost seems pointless, and in other cases, it can seem extremely important. In this case, it also appears to be pointless to own any ZDP-189 (over s30v), as you lose toughness, strength, and loads if corrosion resistance to cut a minuscule amount longer. Interesting to say the least.
Well it's all very complex, one would have to be using, making and testing all these different steels with different HT and Geometry to truly grasp it and connect all the dots.
At the end of the day, controlled testing is not the same as what anecdotally people will experience or express with how they use and sharpen in the real world.
So testing may show one thing and users will see another.
Sal knows this very well, they have CATRA testing, hardness testers, and many other tools in the Spyder lab.
But he knows it's the people that decide, so rather than overwhelm folks with data that is only pertinent to the competition and hardcore geeks they privately R&D, test and QC and send it out to the world for the TRUE test.
Controlled testing should be used to see how the steels compare to each other away from other factors so we can understand how they stack to each other. There are so many variables and all the steels are pretty dang good so it's difficult to see in day to day use per say.
This next part is for new people.
Testing is not to be used as Gospel or that any given user will get exactly this many more cuts than another steel.
It's to sort through how things work by isolating factors so we can see independently in a sand box what we may want to acentuate or improve.
So in reality if someone feels that 1095 holds a longer edge for them, that's fine, but it's NOT the steel and other variables are at play.