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.
The HAP-40 core blade steel (HRc. 68) is forge-welded with Stainless Damascus steel cladding, which is made with alternating layers of Nickel Steel and Stainless Steel. The blade is beautifully mirror polished and finished so that the white color of Nickel Steel layers vividly contrast with the glossy silver color of the Stainless Steel layers.
Sukenari HAP-40 knives are fitted with a beautiful octagonal Ebony wood handle, which has a buffalo horn ferrule and White Spacer. A Magnolia wood Saya(Sheath) is also included with the knife for safekeeping.
The lightweight, double bevel edged Kiritsuke might be compared to a combination of the Nakiri and the Sujihiki. It is a very versatile knife that can be used to perform many of the tasks normally done with a Gyuto.
Knife Model: Sukenari HAP-40 Nickel Damascus Kiritsuke
Blade Material: HAP-40 Nickel Damascus
Rockwell Hardness (HRc): 68
Blade Grind and Edge Shape: Double Bevel Edge 50/50
Handle Material: Octagon Shaped Ebony Wooden Handle with Water Buffalo Horn Ferrule and White Spacer
Saya Included: Yes.
Kiritsuke 210mm (8.2")
Cutting edge length: 202mm
Total Length: 355mm
Blade Thickness: 2.6mm
Blade Width: 48mm
Handle Length: 137mm
Total Weight: 205g
Kiritsuke 240mm (9.4")
Cutting edge length: 232mm
Total Length: 395mm
Blade Thickness: 2.8mm
Blade Width: 51mm
Handle Length: 144mm
Total Weight: 227g
Kiritsuke 270mm (10.6")
Cutting edge length: 262mm
Total Length: 430mm
Blade Thickness: 2.8mm
Blade Width: 52mm
Handle Length: 148mm
Total Weight: 262g
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 fine craftsmanship and sharp edge with your new knife. With proper cares, every Japanese knife should be your special cooking partner for long times.
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.
- Please do not put the knife in the dishwasher machine for cleaning.
- Please do not leave the knife in water or wet condition for long time.
- After using, please hand wash the blade, bolster and handle thoroughly, and wipe it clean and dry with soft clothes, and keep it in dry place.
- This is an extremely sharp knife. Please use special cares in using and storing it.
- Unlike German made knives, Japanese knife blades are ground to thin cutting edge for sharper cutting and easier re-sharpening. Please protect the edge from hitting hard materials to avoid chipping or cracking.
- Please do not use it to cut bone or frozen foods, any hard shell foods such as lobster and crab.
- We recommend using Japanese whetstones to re-sharpen the knife, when it gets dull.