Kanjo HAP40 Bunka 180mm

$193.00 USD


Style: Bunka
Blade Length: 180mm
Blade Material: HAP40 Powder Stainless Steel
Blade Height: 47mm
Spine Thickness @ Heel: 1.6mm
Handle Material: Octagon Pakka Wood
Weight: 150g
HRC: 65


Blade Type

The Bunka knife, a versatile and traditional Japanese kitchen tool, features a distinctive, angular tip and a wide blade. It's designed for precision tasks like slicing, dicing, and chopping. Ideal for handling vegetables, meat, and fish, the Bunka is a multifunctional knife celebrated for its utility and unique aesthetic.

Steel Type

HAP40 is an extremely hard (often HRC65) powder semi-stainless steel by Hitachi Metals in Japan. It holds an edge for an extremely long time and will develop a patina with use. It has enough chromium content to ward off rust spots if left wet for short periods, but best to be kept dry after use. It can be tricky to sharpen without a coarse stone of around 500 grit to get the burr moving.

Recommended Maintenance

Store it in a dry environment using magnetic strips, knife rolls, or sayas. Avoid hitting hard or frozen objects and twisting the blade while cutting. These knives are not dishwasher safe. Clean with hot water and a soft cloth, and dry immediately after use to prevent rust spots on the high carbon steel. For more information please read the blog below.



This line of outstanding HAP40 Steel knives are crafted by Master Kanjo Tsukahara, from Seki City, Japan. Coming from a family of master sharpeners, Kanjo San has taken to creating these pieces to share with the world. They are a clean, classy knife with light weight, subtle hammer finish, and extreme out of the box sharpness, as you’d come to expect from a family of sharpeners.

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Knife Care

This knife is made with a stainless steel and is easy going and low on maintenance. It has high chromium content, meaning it is generally considered safe to leave wet on the board for short periods of time. is still best practice to not leave this knife to air dry as it's stain-less not stain-none! Wipe down after washing the knife and store away from any sources of moisture. 

Customer Reviews

Based on 6 reviews
Great Value HAP40

Great value knife. To my knowledge chefs edge aren't getting more of these so I would recommend grabbing one before they are gone.

Hayden Smallwood
Bunka dinner buster

This knife came sharp and ready to slice. I always hone a few strokes on a ceramic first, but this went through dinner prep with ease and smooth joy. Very happy with it.

Ly Phan

Outstanding for this price, i use this knife daily and nothing can stop it .

Ly Phan

Outstanding for this price, i use this knife daily and nothing can stop it .

scott zilko

Great blade, Well balanced, Looks amazing and performs even better great knife for the price! This will probably be my go to knife for quick n easy work!