TurningMillingDrillingTechnicalInformationIndex Grade overview Indexable milling Coated cemented carbide CVD A Grade ISO Micro structure Grade description YBC301 P20 - P35 CVD coated P20–P35 carbide grade for medium operation to roughing of steel at lowercutting speed. CVD coated P20–P35 carbide grade for medium operation to roughing of steel at higher YBC302 P20 - P35 cutting speed. Optimal performance of wear resistance and toughness for a wideapplication field. B YBC401 P30 - P50M30 - M40 CVD coated P30–P50/M30–M40 carbide grade for roughing operation of steel at lowercutting speed and unstable condition. YBM251 P20 - P30M15 - M35 CVD coated P20–P30/M15–M35 carbide grade for medium to roughing operation in Cstainless steel and steel with wide application field. Good wear resistance and capabilityagainst plastic deformation at normal cutting speed. CVD coated M15–M35 carbide grade for medium to roughing operation in stainless YBM253 M15 - M35 steel with wide application field. High wear resistance and capability against plasctic deformation at higher cutting speed. D YBM351 P25 - P40M20 - M40 CVD coated P25–P40/M25–M40 carbide grade for roughing operation in stainless steeland steel. Good wear resistance and edge stability at normal cutting speed. YBD152 K10 - K25 CVD coated K10–K25 carbide substrate. Optimized for medium to roughing operation ofcast iron. Good wear resistance and toughness at higher cutting speed. E YBD252 K20 - K35 CVD coated K20–K35 carbide substrate. Optimized for medium to roughing operation ofcast iron and Steel. Good wear resistance and toughness at higher cutting speed. B 21