Hitachi HAP-40 is currently one of the most mysterious and attractive steels produced in Japan. This hi-tech powdered metal steel alloy has a very rich chemical position and, when it is forged and heat-treated properly, we believe that it probably offers better cutting performance and edge retention than any other high-quality Japanese steel.
Sukenari’s knowledge of traditional forging processes and their extensive experience with modern, high performance, steels proved to be invaluable while perfecting these new HAP-40 knives. Master Hanaki, Sukenari’s innovative and energetic knife maker and Master forge-smith, has successfully managed to extract the best cutting performance and edge retention from these HAP-40 knives (HRc. 68). They are perfect for customers who love testing exotic hi-tech steels, or those who appreciate knives with outstanding cutting performance and edge retention.
Master Hanaki believes that these new HAP-40 knives offer very competitive cutting performance and edge retention relative to his ZDP-189 and Aogami Super knives. In addition, HAP-40 offers better toughness than ZDP-189, - even when it is heat-treated to a higher Rockwell hardness. Consequently, Master Hanaki has confidence that the new Sukenari HAP-40 knives will prove to be some of the best performing and most practical knives that Sukenari offer.
Sukenari HAP-40 knives are fitted with a comfortable octagonal magnolia wood handle, which is fitted with a buffalo horn ferrule. A Magnolia wood Saya (Sheath) is also included with the knife for safekeeping
The tall blade and rounded nose / tip of the Santoku make it a versatile knife that is well suited to cutting meat, fish, or vegetables; Hence it’s name, which literally means “Three-purpose”. The Santoku is often recommended as a multi-purpose kitchen knife.
Knife Model: Sukenari HAP-40 Series Wa Santoku
Blade Material: HAP-40 Clad
Rockwell Hardness (HRc): 68
Blade Grind and Edge Shape: Double Bevel Edge 50/50
Handle Material: Octagon Shaped Magnolia Wooden Handle with Water Buffalo Horn Ferrule
Saya Included: Yes.
Wa Santoku 190mm (7.4")
This knife comes with 50/50 double bevel edge geometry for both right and left handed use.
For your information, Japanese Kitchen knives are generally designed for right hand use with a slightly thicker and rounded grinding on the right side blade and a less rounded (almost straight flat) grinding on the left side blade. However, both right and left hander can use the knives that have double bevel edge sharpened 50/50 without problems.
We believe the quality and cutting performance of Japanese knives are the best in the world, and hope you enjoy the fine craftsmanship and its sharp edge of your new knife. With proper cares, every Japanese knife should be your special cooking partner for a long time.
This is the Powdered High Speed Tool Steel blade kitchen knife that has a rust resistance for easy maintenance. However, it may get rust, if kept in wet condition.
Hi Koki, I am using Sukenari Santoku 190mm, ZDP-189 about one year. Knife is very easy for use, it is a light, precise and sits well in hand. Regardless of using whole blade or just tip it cuts perfect. It is nice that it remains sharp for a long time. However, resharpening requires hard work. It takes much more effort then R-2 or carbon steel knifes. I am using #1000 and #4000 Grit wetstone, which is usually enough to get excellent sharp blade. Sometime I finish blade with #10000 Grit wetstone, and then mirror polished edge is clearly visible. When I do that properly, knife becomes so sharp that almost no force is required for most cutting tasks. Comparing ZDP-189 Santoku with HAP-40 Santoku, which I add recently to my collection, I didn't find any difference in cuting perfprmance. Just to add, after two months of HAP-40 Santoku usage, I didn't try to sharp it yet. Both knifes require minimum maintenance, just simple washing after use. I think that I found perfect multi purpose knife. Best regards, Denis and Mirjana Rancic
Very much like the performance and edge!