S90V Steel
CPM S90V is an advanced American powder metallurgy stainless steel originally developed by Crucible Industries. Its composition includes approximately 2.3% carbon, 14% chromium, 1% molybdenum and an exceptionally high 8.75-9% vanadium. This very high vanadium content gives S90V outstanding wear resistance and edge retention.
At around 62 HRC, S90V offers an exceptional balance for high-performance kitchen knives. It combines extremely long-lasting edge retention with greater toughness and better resistance to chipping than very high-hardness steels such as ZDP-189, while also being easier to sharpen.
Bunka – Japanese Multipurpose Chef’s Knife
The Bunka is a versatile Japanese chef’s knife designed for a wide range of everyday kitchen tasks. Its relatively tall blade offers good knuckle clearance, while the distinctive angled K-tip gives the knife a fine, precise point for detailed work.
Bunka knives work well for vegetables, meat, fish, herbs and fruit. The flatter section of the cutting edge is efficient for push cutting and chopping, while the pointed tip is especially useful for trimming, scoring and precise cuts.
Usually shorter and more compact than a full-size Gyuto, the Bunka is an excellent choice for cooks who want one highly versatile knife with a more agile feel and a precise tip.
BTN Chef Knives
BTN chef knives are individually handcrafted in Vietnam in a small artisan workshop, with a strong focus on high-performance powder metallurgy steels, precise heat treatment and cutting performance. BTN specializes in steels such as CPM S90V, combining exceptional edge retention with practical toughness for demanding kitchen use.
The knives are distinguished by their carefully executed convex grinds, thin cutting geometry and excellent food release. Each knife is individually made rather than mass-produced, with considerable attention given to blade geometry, finishing and distinctive premium handles.
Hikari Chef Knives works directly with BTN on specifications, design details and product development. Our BTN knife collection is available internationally for both retail and wholesale.
