Ceramic Turning Inserts TNGA160408 A65 (10pcs) - High-Speed Machining for Hardened Steel and Cast Iron CNMG643 YBD151 use a carbide grade like

use a carbide grade like TT9080

If the tool path hits heavy cross-holes or raw scale

031" VP15TF Miracle PVD Grade

Machining Troubleshooting Guide: If poor surface finish or built-up edge occurs

CNMG120408 UC5105

Ceramic Turning Inserts TNGA160408 A65 (10pcs) - High-Speed Machining for Hardened Steel and Cast Iron CNMG643 YBD151 use a carbide grade likeProduct Description Upgrade your machining efficiency with the Ceramic Turning Inserts TNGA160408 A65. These high quality ceramic inserts, made from Aluminum Oxide and Titanium Carbide (Al2O3+TiC), are capable of running at high speeds, significantly reducing expensive machining time. Ideal for hard turning of 38HRC to 64HRC hardened steel and semi roughing to finishing of cast iron, these inserts offer exceptional performance and durability. This