Tojiro Powdered High Speed Steel by 3-Layers Chef's Knife Gyuto 210mm F-520
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Type: Chef's Knife
Blade Material: Powdered High Speed Steel Clad Stainless Steel
Core: Powdered High Speed Steel
Outside: 13 Chrome Stainless Steel
Blade Length: 210 mm (8.2'')
Total Length: 335 mm (13.2'')
Weight: 200 g (7 oz)
Handle: Special Laminated Material
Made in Japan
Powdered high speed steel is made of processed high speed steel that is extremely hard and usually used for cutting metals. The edge retention is more outstanding than VG10, Molybdenum Vanadium and so on.
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. Powdered High Speed Steel is hard, so Ceramic sharpening stone is recommended for speedy sharpening.