Ittosai Kotetsu damascus aogami#1 gyuto 240mm

Specifications

The Ittosai Kotetsu Wa-Gyuto 240mm is a Japanese chef’s knife from Sakai, Japan. Featuring Aogami #1 core steel, known for its high hardness (~64 HRC) and excellent edge retention, with reactive iron-clad damascus, this knife benefits from Tanaka-san’s renowned heat treatment, optimizing the steel’s balance of hardness, toughness, and sharpenability.

• Hand-forged in Sakai, Japan by Yoshikazu Tanaka
• Sharpened by Shuji Yamaguchi
• Cutting edge length: 228mm (8.98")
• Core steel: Aogami #1 (~64 HRC)
• Reactive iron-clad damascus develops a protective patina over time

Details

• Brand: Ittosai Kotetsu
• Blacksmith: Yoshikazu Tanaka
• Sharpener: Shuji Yamaguchi
• Producing Area: Sakai, Japan
• Knife Type: Wa-Gyuto
• Core Steel: Aogami #1
• HRC: ~64
• Steel Type: Carbon Steel
• Cladding: Iron-clad damascus

Blade & Handle Specs

• Overall length: 383mm
• Blade length (heel to tip): 228mm (8.98")
• Blade height at heel: 50.4mm
• Spine thickness:
  • At the handle: 3.4mm
  • At the heel: 2.9mm
  • Midway: 2.1mm
  • 1cm from the tip: 0.8mm
• Weight: 175g
• Edge/bevel: 50:50
• Handle: Octagonal magnolia with horn ferrule
• Hand Orientation: Ambidextrous
• Saya/Sheath: Not included

Notes

• For the care and maintenance of Japanese kitchen knives, such as this Tanaka Damascus Gyuto, refer to our care guide below.
• Slight measurement variations are common in Japanese kitchen knives.
• Small surface finish variations in knives are a normal part of the handcrafting process.