TurningMillingDrillingTechnicalInformationIndex General turning Grade overview CBN A Grade ISO Micro structure Grade description YCB211 K10 - K25 Uncoated, brazed K10–K25 CBN grade for fine to medium machining of cast iron. Goodwear resistance and thermal conductivity. B YZB121 H10 - H25 Uncoated H10–H25 solid CBN grade for medium application in hardened steel, HSS orbearing steel also in light interrupted cut. Good wear resistance and toughness. Uncoated K10–K25 solid CBN grade for medium application in grey cast iron, nodular cast YZB221 K10 - K25 iron and Ni/Cr basic alloy., also in light interrupted cut. Good wear resistance and thermal conductivity. C Uncoated K20–K30 solid CBN grade for medium to roughing application in grey cast iron YZB231 K20 - K30 and nodular cast iron in interrupted cut. Good wear resistance, toughness and thermal conductivity. PCD Grade ISO Micro structure Grade description D Uncoated, brazed N01–N10 PCD grade for fine finishing operation of aluminum alloys less YCD421 N01 - N10 than 12 % Si, composites, copper/magnesium and other alloys. Medium grain size grade with good wear resistance for a wide application field. Cermet Grade ISO Micro structure Grade description E YNG151 P05 – P15 Uncoated P05–P15 cermet grade for fine finishing operation of steel and stainless steel.Good resistance against plastic deformation for good surface finishing. A 36