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CVD coatings were deposited on the cermets and cemented carbides tools. Uncoated cermets, coated cermets and cemented carbides tools were used for hardened AISI H13 steel machining. Face-centered cubic structure of the cermets attribute to the direct growth of the TiN coatings. TiN and TiCN shows (2 0 0) preferred orientation on the cermets. The hexagonal closepacked structure of the cemented carbides make the TiN coatings nucleate first and then grow. TiN and TiCN shows (1 1 1) preferred orientation on the cemented carbides. When the cutting speed reaches and exceeds 700 r/min, the coated cermets have the longest life. The excellent diffusion and adhension wear resistance at elevated temperature of the coated cermets result a better surface quality of workpiece. Keywords: Cermets, Structure, Coatings, Cutting performance