TurningMillingDrillingTechnicalInformationIndex Grade overview General turning Cermet A Grade ISO Micro structure Grade description PVD coated P05–P15 cermet grade for fine finishing operation of steel and stainless YNG151C P05 – P15 steel. Good wear resistance and capability against plastic deformation for good surface roughness. Uncoated P10–P25 cermet grade for fine finishing to medium operation of steel and YNT251 P10 - P25 stainless steel. Good wear resistance and toughness. Suitable also in light interruptedcut. B C D E A 37