Grade WU25PDWPK10CHWU25CHWU40PH Modular and Indexable Drills Grades and Grade Descriptions P Steel Coatings provide high-speed capability M Stainless Steel and are engineered for finishing to light K Cast Iron roughing. 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 Composition: With a multilayered PVD TiN-TiAlN coating and a high-quality P submicron carbide substrate, this grade gives a high level of wear resistance atmedium to high cutting speeds.M Application: First choice for high reliability in most materials. This grade should be K used at medium to high speeds and feeds. It is a general purpose grade that performs very well for alloyed and high-alloy steel and cast iron, but can also be used with excellent performance in stainless steels. NOTE: Previously named K20FTiAlN. 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. P Composition: Advanced CVD TiCN-Al2O3 coating together with a newly engineered tough carbide substrate. Ensures adequate deformation resistance and excellent M 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 excellent reliability in steels, stainless steels, and cast iron rates. 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. widia.com S7