B PERFORMING OPERATIONS; TRANSPORTING
B23 MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B TURNING; BORING
B23B27/00 Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
B23B27/14 Cutting tools of which the bits or tips; or cutting inserts; are of special material
B23B27/148 Composition of the cutting inserts