Patent ID: 8409732

Claim:
A cutting tool insert comprising: a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel; and a hard and wear resistant coating applied to the body, the coating comprising one or several layers, at least one of which is an (Al,Cr) 2 O 3 layer, wherein said layer has a corundum phase crystalline structure and a composition (Al 1-y Cr y ) 2 O 3 with 0.5≦y≦0.7, with a thickness of 0.5 to 10 μm and a fiber texture, rotational symmetry, in a direction of a coated surface normal with an inclination angle, φ, of basal planes relative to the coated surface normal is 20°<φ<55° or the inclination angle, φ, for a highest peak in a pole plot is 20°<φ<55°.