Abstract: A sintered hard metal product, e.g. a disposable cutting insert for use in the machining of metals, consisting of a cemented metal carbide substrate and a thin wear-resistant surface coating comprising a plurality of coating layers of different compositions applied on to at least a part of the surface of said substrate and on top of each other by chemical vapor deposition, characterized in that said coating layers include:an innermost layer applied directly onto said substrate and consisting of at least one member selected from carbides, nitrides and carbonitrides of Ti, Zr, Hf, V, Nb, Ta, Al and Si;a second layer applied directly on said innermost layer, consisting essentially of aluminium oxide and having a thickness of about 1 to about 3.mu.; anda third layer composed of one or more sublayers of titanium carbide, titanium nitride and titanium carbonitride, applied on top of said aluminium oxide layer.