Kohetsu HAP40 Sujihiki 270mm

The Kohetsu HAP40 sujihiki is a great rendition of a Japanese slicing knife. It is made from HAP40 steel which is a semi-stainless alloy. As it is not fully stainless, the edge might stain or patina over time. But this just adds another layer of character to this great looking knife. The inner core is covered with a softer stainless steel for added protection and strength. The HAP40 steel is hardened to 65 HRC which is very high.

The blade is quite thin in profile and is quite light in weight. Spine thickness is on the thin side with just a little taper to the tip. It is a 50/50 bevel edge so it’s perfect for left- or right-handed users. The long slender blade is slightly curved at the spine for extra clearance at the handle end. The edge has a very smoothly curved profile with a mild belly. Out of the box edge sharpness is very good. *The knife protector fits better than our suji sayas.

The knife has very good fit and finish on the handle, which is a traditional ho wood octagonal design with a highly polished buffalo horn ferrule. The balance is quite forward due to the light handle. This is a nice trait to have on a long bladed knife. These knives are purposely sharpened with a very thin edge especially in the tip region. Because of this there might be some slightly cloudy scratch patterns in these areas. This is not a defect. Check out the 4th photo for a close up detail.

Brand: Kohetsu

Maker: Tsukahara san

Location: Seki City

Edge Steel: HAP40 Semi Stainless Steel

HRC: 65-66

Cladding: 404 Stainless Steel

Edge Grind: 60/40

Weight: 5.4 oz/ 152g

Blade Length: 270 mm

Overall Length: 416 mm

Spine Thickness at Heel: 2.02 mm

Blade Height: 40.95 mm

Handle: Charcoal Grey Pakka Octagonal

Ferrule: Buffalo Horn

Photos By Gustavo Bermudez