Patent ID: 8293386

Claim:
A single-layer or multilayer nitridic or carbo-nitridic hard material coating, comprising: a content of Al and a content of Ti, and formed with at least one coating layer having the composition: (Al x Ti y Ru z Me v )(N a C 1-a ), where 0.45≦x≦0.75; 0.2≦y≦0.55; 0.001≦z≦0.1; 0≦v≦0.2; 0.9≦(x+y+z+v)≦1.1 0.8≦a≦1.0; and Me is one or more elements selected from the group consisting of Si, B, W, Mo, Cr, Ta, Nb, V, Hf, Zr, and v is a total content of said elements.