Grade WPK10CHWU25CHWU40PHwear resistance Indexable Drills Grades and Grade Descriptions P Steel Coatings provide high-speed M Stainless Steel capability and are engineered for finishing to light roughing. K Cast Iron N Non-Ferrous S High-Temp Alloys H Hardened Materials wear resistance toughness Coating Grade Description 05 10 15 20 25 30 35 40 45 P Composition: With an advanced CVD TiCN-Al2O3 coating combined with a cobalt-enriched carbide substrate, this grade offers a balanced combination of deformation-resistance and edge toughness. K Application: Offers outstanding abrasion and crater wear resistance for high-speed machining of steels and cast irons. Use for very high cutting speeds with low to medium feed rates. TiCN-Al2O3 P Composition: Advanced CVD TiCN-Al2O3 coating together with a newly engineeredtough carbide substrate. Ensures adequate deformation resistance and excellentM edge strength and offers very good wear resistance over a wide range of K machining conditions. Application: A high productivity grade with high speeds and feeds. First choice for high productivity with very good reliability in steels, stainless steels, and cast iron rates. TiCN-Al2O3 P Composition: With a multilayered PVD TiN-TiAlN coating and a tough substrate, M this grade withstands interruptions and provides high wear resistance for long tool life. Application: First choice for high reliability in most materials. This grade should be K used at medium speeds and high feeds due to sharper edges and as a grade for high- toughness applications. It covers steel, stainless steel, cast iron, and high-temp alloys under certain conditions. TiCN-Al2O3 P K WPK10CH P M K WU25CH WPK10CH: P High-Speed Grade M K WU25CH: WU40PH High Metal Removal Rate Grade WU40PH: High Toughness Grade toughness widia.com V7