Bunka Knife in Damascus Steel with ZDP-189 Core

Bunka Knife in Damascus Steel with ZDP189 Core, 48 Layers of SUS420J2 Steel and Octagonal Resin Handle

The blade is constructed around a ZDP189 powdered steel core (approx. 3% carbon, 20% chromium), developed by Hitachi and vacuum-treated with cryogenic cooling, achieving 65–67 HRC. This core provides exceptional edge retention and wear resistance. Surrounding it are 24 layers of SUS420J2 stainless steel on each side (49 layers in total), offering flexibility, oxidation protection, and a natural multi-layer Damascus pattern without surface etching. The edge is sharpened at 15° ±1 per side and hand-polished to a high gloss, delivering ultra-sharp, smooth cuts with minimal friction.

The handle features a classic Japanese octagonal design, moulded in high-density black resin, reinforced internally with phosphor bronze resin and white brass ferrules. Multiple stages of hand polishing ensure a refined texture, comfortable grip, moisture resistance, and dimensional stability, ideal for ambidextrous use.