The paper present results of investigations of the type base material of the W-Mo-V-Co+Si, with economically adjusted chemical composition on structure and properties of hard, wear resistant coatings of titanium nitride TiN and titanium carbonitride Ti(C,N), deposited in the PVD process. It was shown that high-speed steels containing 9%-11% tungsten, 2% molybdenum and limited the Co concentration from 10% to about 5%, coated in the PVD process expose properties comparable with the ones obtained on the others high-speed steels grades. This makes it possible to employ in practice the high-speed steels with relatively low concentration of the alloying elements instead of the high-alloy cobalt steels, provided the base heat treatment is carried out so that it ensures the maximum secondary hardness.
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