Threading Grade overview Threading A Grade ISO Micro structure Grade description PVD coated P10–P30/M10–M30 carbide substrate for finishing to medium application of Turning P10 - P30 YBG201 M10 - M30 steel and stainless steel. Good wear resistance in a wide application field. P10 - P30 PVD coated P10–P30/M10–M25 carbide substrate for finishing to medium application of B YBG202 M10 - M25 stainless steel and steel (milling). Good wear resistance in a wide application field. Milling 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 Drilling D Information Technical E Index A 410