Grade CM1CG5 Grades and Grade Descriptions Quadralock™ Inserts P Steel Coatings provide high-speed M Stainless Steel capability and are engineered K Cast Iron for finishing to light roughing. N Non-Ferrous S High-Temp Alloys H Hardened Materials wearresistance toughness Coating Grade Description 05 10 15 20 25 30 35 40 45 P Uncoated carbide. A very tough, ultra-fine grain unalloyed substrate. For M general-purpose machining of most steels, stainless steels, high-temperature alloys,titanium, irons, and non-ferrous materials. Performs best at low speedsK and will handle interruptions and high feed rates. Use when C2, C3, or C25 N fail due to chipping or breaking. S HW-S25 P M A PVD-TiN-coated grade. Straight 9.5% Co substrate. Submicron grain. For general-purpose machining of most steels, stainless steels, high-temperature alloys, K titanium, irons, and non-ferrous materials. Performs best at low speeds andwill handle interruptions and high feed rates.N S HC-S25 widia.com D77