Grade overview Parting & grooving Parting & grooving Grade ISO Micro structure Grade description A Turning P15 - P30 PVD coated P15–P30/M25–M40 carbide substrate for medium roughing application of YBG302 M25 - M40 stainless steel and steel (milling). Good wear resistance and toughness. K05 - K20 Uncoated K05–K20/N05–N20 carbide substrate for fine to medium application in YD101 N05 - N20 aluminum and other material. B Milling K10 - K30 Uncoated K10–K30/N10–N30 carbide substrate for medium application in aluminum and YD201 N10 - N30 other material. C Drilling D Information Technical E Index A 347