Ti(C,N) - (Ti,Ta,W) (C,N) - Co - Legierung für algemeine Schneidwerzeug Anwendungen

摘要

The present invention relates to a sintered body of a carbonitride alloy with titanium as main component and additionally Ta, W with specific ration N/(C+N): 0.25-0.50 which has improved properties particularly when used as cutting tool material in general finishing cutting operations requiring high deformation resistance in combination with relatively high toughness. This has been achieved by combining a carbonitride based hard phase of specific chemical composition with an extremely solution hardened Co-based binder phase, said Co is contained in a content of 9 - < 12 at % and hardened mainly by W atoms to obtain a relative magnetic saturation below 0.75 and a coercive force above 12kA/m.