Tsunehisa AS Hammered Western Petty 150mm featured here is made from the super steel knowns as AS, or Aogami Super. AS is one of our favorite steels for making knives, as it has the highest wear resistance and lowest toughness of the three Blue Paper steels. Edge holding is truly outstanding and it is also easy to sharpen.
AS contains the highest amount of carbon and chromium of the three alloys, which not only increases its hardness but also gives it a slight advantage over the others in terms of corrosion resistance. This is further enhanced with the addition of a stainless steel cladding. The cladding is somewhat softer or more ductile which protects the inner cutting core from shocks. This knife is given a tsuchime or hammered finish to both enhance its food release capabilities and fine aesthetics.
Brand: Tsunehisa
Location: Tosa, Japan
Construction: Roll Forged, San Mai
Edge Steel: AS Carbon Steel
Cladding: Stainless
Edge Grind: Double Bevel, Even (See Choil Shot)
HRC: 63
Finish: Tsuchime, Kurouchi
Handle: Western, Red Pakka
Engraving: Laser Engraved
Weight: 3.3 oz/ 94g
Blade Length: 153 mm
Overall Length: 260 mm
Spine Thickness at Heel: 2 mm
Blade Height at Heel: 30mm
AS contains the highest amount of carbon and chromium of the three alloys, which not only increases its hardness but also gives it a slight advantage over the others in terms of corrosion resistance. This is further enhanced with the addition of a stainless steel cladding. The cladding is somewhat softer or more ductile which protects the inner cutting core from shocks. This knife is given a tsuchime or hammered finish to both enhance its food release capabilities and fine aesthetics.

