Yu Kurosaki HAP40 Petty Knife 130mm Gekko
Blacksmith: Yu Kurosaki
Type: Petty / Utility Knife (Double Bevel)
Blade Material: HAP40 Clad Stainless Steel
Core: HAP40 (Powder high-speed steel)
Edge Length: approx 130 mm
Overall Length: approx 270 mm
Weight: approx 73 g (2.5 oz)
Blade Width: approx 29 mm
Thickness of Spine: approx max 2mm
Handle: Octagonal Oak
HRC: around 65
Blacksmith Yu Kurosaki makes his knives in Echizen City. Knives in Echizen city are the Traditional Crafts designated by the Minister for Economy, Trade and Industry. His forged kitchen knives and forged Field knives are masterpieces. He has participated in a number of knife show so far, is the hot young craftsman of attention as the feature is organized magazines and TV.
This series is Gekko means moon light in Japanese. The feature of this series is powder high speed steel HAP40 is used.
HAP40 is Powder High-Speed Steel made by HITACHI Metals,ltd. The feature is very hard, abrasion resistance, edge retention is excellent. The edge retention of HAP40 is said that it has the best edge retention among SG2(R2), ZDP189, Aogami super. Someone said that if HAP40 kitchen knife is used at home, it is not necessary to sharpen for half a year.
HAP40 is semi stainless, not included chromium well. And this steel will rust in the acid, salt, moisture, etc.. please wipe after use and keep it dry and clean.
If it gets rust, it will be cleaned to polish by with scrubbing pad or round slices of radish it with a cleanser.
The knife is made by hands, there are scratches and dent and so on. Almost Japanese knives are thin blade. Don't hit and cut frozen food or bones, the edge will be chipped or broken.