Selection of Sumitomo Grades (Turning) Selection Guide by Work Material and Cutting Process Cutting Process General Steel (Carbon Steel, Alloy Steel), Soft Steel Stainless Steel Cast Iron Wear Resistance Fracture Resistance Wear Resistance Fracture Resistance Wear Resistance Fracture Resistance A ISO Classification - P01 P10 P20 P30 P40 - M01 M10 M20 M30 M40 - K01 K10 K20 K30 AC810P C AC6020M C AC405K C Grades AC6030M C AC8025P C AC6040M AC415K C Coated P Carbide AC820P C AC610M C AC630MC AC420K C AC830P C AC830P C AC8025P C AC520U AC530U A24 P P Small Product Machining P AC1030U AC1030U AC1030U A22 P P Coated P T1500Z Cermet P T3000Z A27 T1000A T1000A T1000A Cermet T1500A T1500A A27 Carbide A28 ST10P ST20E A30 G10E Ceramic A34 NB90S BNS800 Uncoated CBN BN7000 Coated CBN BN500 BNC500 A30 P *For Ductile Cast Iron Cutting Process Exotic Alloy Hardened Steel Non-Ferrous Metal Sintered Components Wear Resistance Fracture Resistance Wear Resistance Fracture Resistance Wear Resistance FractureResistance WearResistance Fracture Resistance ISO Classification - S01 S10 S20 S30 - H01 H10 H20 H30 - N01 N10 N20 N30 - 01 10 20 30 Coated P AC510U AC503U Carbide AC520U P P AC510U A24 P Cermet A27 T1000A EH510 Carbide H1 A28 EH520 Ceramic A34 WX120 P NB100C P BNC2010 P BNC2020 Coated CBN P BNC300 P BNC100 P BNC160 A30 P BNC200 BN1000 BN7000 BN2000 BN7500 BNX20 Uncoated CBN BN350 BNS800 BNX10 BN7000 A30 BNX25 PCD DA1000 A32 DA150 A2 : 1st Recommendation : 2nd Recommendation C : CVD Coating P : PVD Coating Blank: Uncoated