Seco Secomax™ Turning Insert, RNMN Insert, 060300 Insert, Round, 2.9 mm Maximum Depth of Cut, 6.35 mm Inscribed Circle, 3.18 mm Thickness, 06 Seat, Neutral Rake, Manufacturer's Grade: CBN300, ANSI Code: RNMN22S CBN300, ISO Code: RNMN060300S CBN300, 0 deg Relief Angle, PCBN, Uncoated, Material Grade: K, For Use On: Cast Iron

Polycrystalline cubic boron nitride (PCBN) is a material which is sintered at extremely high pressure and high temperature into a wear-resistant material with properties close to those of diamond. Due to the hot hardness, oxidation resistance and fracture toughness of the material, inserts made of PCBN have excellent edge strength and long tool life when machining hard ferrous materials and pearlitic grey cast iron.