Introducing a Chefknivestogo Exclusive! Kohetsu HAP40 knives are a new line that will appeal to the performance customer who wants unmatched edge retention. HAP40 is a semi stainless, Powdered High Speed Steel that takes and holds an edge better than any other steel available on our site. We think it holds the potential to become one of the best steels on the market for the production of high quality kitchen knives. Hitachi manufactures this steel and it contains abundant amounts of hard elements like W (Tungsten), Mo(molybdenum), V(Vanadium), and Co(Cobalt). As a result, it can be hardened to 65-66 HRC and will hold its edge an amazingly long time. These are western handled knives with Mahogany scales and stainless steel bolsters.
Got this knife yesterday and couldn’t wait to try it out. The cutting edge was very sharp at the toe and heal,but dull in the center of the blade. Upon close inspection I discovered that the cutting edge was concave in the center rather than convex or straight. After a couple of hours of reshaping and sharpening,the blade profile is now correct and the knife has taken an extremely fine edge. I put a 10 degree bevel on it and was surprised how easily it sharpens for such a hard steel.
It really does fall through food. I would have given the knife five stars if I didn’t have to profile the blade.
Wow! The knife drops through food like nothing I’ve ever tried. Handle is beautiful and the grinds on the knife are excellent. Thanks!