[Ceramic] How to read pages of “Turning Inserts” B13 ■ Grooving Inserts Edge Prep. Gray Cast Iron (With Scale) Ref. to Page for Applicable Toolholders Symbol Cutting Edge Spec. Example K Gray Cast Iron (Without Scale) O N B S Chamfered and Honed S01525 0.15mm X 25° Nodular Cast Iron (With Scale) Cutting Edge Chamfered and Honed Cutting Edge Nodular Cast Iron (Without Scale) T Chamfered Cutting Edge T01525 0.15mm X 25° S Heat-resistant Alloys Chamfered Cutting Edge H Hard Materials O N Aluminum PVD Coated MEGACOAT Silicon Nitride CVD Coated Silicon Nitride Ceramic structure Ceramic Insert (Turning) Dimension (mm) Oxide Ceramic Ceramic Ceramic Ceramic SiAlON Honeycomb Edge Ceramic Insert Description Prep. KA30 KT66 A66N PT600M KS6050 CS7050 KS6030 KS6040 W rε L H A65 CF1 3゜ GH 4020-05 S01020 4.0 N ±0.05 4020-05 T01020 N N W 3゜ L rε 5020-05 S01020 5.0 0.5 20 7.5 N G38 5020-05 T01020 N N G61 H 6020-05 T01020 6.0 N N 5゜ 120゜ 7020-05 T01020 7.0 N N Inserts are sold in 10 piece boxes ●:Std. Item B107