The B5K grade is designed for the continuous-to-light interrupted machining of hardened steel, although its geometry also makes it suitable for the finish machining of ductile cast iron. For more robust machining demands, the B6K complements the B5K with its ability to conduct medium-to-heavy interrupted machining of hardened steel.
Performance data for the B5K grade includes cutting speeds in the region of 200 m/min with depths of cut up to 0.2 mm. For heavier cutting parameters, the B6K has the capability to run at cutting speeds beyond 220 m/min with depths of cut of up to 0.2 mm at feed rates of 0.08 mm/rev.