Isshin Damascus VG10 Petty Knife 135mm
Brand: Isshin Hamono
Type: Petty / Utility Knife (Double Bevel)
Blade Material: VG10 Damascus
Blade Length: 135 mm (5.3'')
Total Length: 247 mm (9.7")
Thickness of Spine: 1.8 mm
Weight: 88g (3.1oz)
Blade Height: 28 mm
Handle: Laminated Reinforced Wood
Made in Japan
The elegant wave pattern called the popular name "Sumi Nagashi" is one of the treasure which Japanese cutlery culture produced. Like a Japanese sword "Katana", the blade is made with softer and harder steel to layers. We Japanese call Suminagashi in English Damascus.
The shape of blade is called "HAMAGURI-BA" in Japanese. HAMAGURI means clam, BA means blade or edge. It smoothly cuts into ingredients and is an ideal shape has strength.
VG-10 (Cobalt Alloy Steel) is high-carbon stainless steel containing cobalt, hard. The material has excellent sharpness and abrasion resistance. So it spread between the professionals. It is developed and made by Takefu Special Steel Co.,Ltd. It's Japanese company.
If the entire blade is very hard, it is difficult to sharpen. If the edge is soft, it is dull, and the sharpness falls immediately. So the hard material is used in the center only, the soft material is used in the side. VG-10 is hard, so Ceramic sharpening stone is recommended for speedy sharpening.
Note: Don't twist edge, and don't cut and hit frozen foods or bones, the edge will be chipped or broken.