TurningMillingDrillingTechnicalInformationIndex Threading Grade overview Threading A Grade ISO Micro structure Grade description YBG201 P10 - P30M10 - M30 PVD coated P10–P30/M10–M30 carbide substrate for finishing to medium application ofsteel and stainless steel. Good wear resistance in a wide applicationfield. B YBG202 P10 - P30M10 - M25 PVD coated P10–P30/M10–M25 carbide substrate for finishing to medium application ofstainless steel and steel (milling). Good wear resistance in a wide application field. P10 - P30 PVD multilayer coated P10–P30/M20–M40/S15–S25 carbide substrate for finishing to YBG205 M20 - M40 medium application of stainless steel, super alloy and steel (milling). Good wear resistance S15-S25 and thermal stability in a wide application field. C D E A 410