Patent ID: 7976607

Claim:
WC—Co cemented carbide comprising a WC grain size of 1.0-2.5 μm and a Co-content of 3-15 wt-% Co and in addition to that ppm levels of the following elements Ti, V, Nb, Zr or Ta or mixtures of these such that the ratio of Me /Co=(at-% Ti+at-% V+at-% Nb+at-% Zr+at-% Ta) /at-% Co is lower than or equal to 0.014-(CW) *0.008 and higher than 0.0005 with CW 0.80-0.95 where CW=magnetic-% Co/wt-% Co where magnetic-% Co is the weight percentage of magnetic Co and wt-% Co is the weight percentage of Co in the cemented carbide.