Kennametal Inc.

A T Santhanam

William A Bryant

A coated cutting tool, as well as a method for making tool and a method for the milling of ductile iron using the cutting tool wherein the cutting tool includes a rake face and a flank face with a cutting edge at the juncture there. The cutting tool also presents a coating and a substrate. The substrate comprises a tungsten carbide based cemented carbide having a bulk composition of no more than 7 weight percent tantalum, no more than 3 weight percent niobium, no more than 5 weight percent titanium, no more than 1 weight percent chromium, between about 5 and about 13 weight percent cobalt, and the balance tungsten carbide. The coating has an innermost coating scheme including at least one layer adjacent to the substrate, and an outermost layer comprising titanium carbide applied by chemical vapor deposition layer.

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Monroeville, PA, United States of America

A T Santhanam