Steel: This Japanese 9" Chef's Knife is handmade by our artisans with AUS-10 Steel. The high strength steel core in protected by 2 layers of 430 steel on either side, guaranteeing that it will last you a lifetime. Made from High Carbon Steel, Chromium, Manganese, Molybdenum, Nickel, Silicon, and Vanadium, this knife will cut through the thickest and toughest steaks. HRC Hardness: 60 HRC Handle: The handle of this knife is made from Natural African Wood polished with resin to completely protect it from corrosion and wear. The handle is cut into an octagonal shape to provide the best grip when cutting. Product Specification: Full Length: 37 cm (14.