Turning insert with a tough submicron substrate, PVD coated. Suitable for low-to-medium cutting speeds. Developed for machining of heat resistant alloys, austenitic stainless steel and hard steel. Double-sided, triangular insert, positive rake angle that varies along the edge to negative in order to prevent chipping. Special design reduces cratering. Used for carbon and alloy steel, stainless steel and high temp. alloys.