Grade HCK10HWK10HWK15 WIDIA™ Inserts • Machining Aluminium Grades and Grade Descriptions Coatings provide high-speed P Steel capability and are engineered M Stainless Steel for finishing to heavy roughing. K Cast Iron N Non-Ferrous S High-Temp Alloys H Hardened Materials wearresistance toughness Coating Grade Description 05 10 15 20 25 30 35 40 45 Coated carbide. PVD — TIALN-Al2O3 on micro-grain carbide. Light and medium machining. For aluminium alloys. N HC-N10 Uncoated carbide. Micro-grain carbide with high cutting edge stability. Light machining. For non-ferrous metals and non-metals. N HF-N10 Uncoated carbide. Micro-grain carbide with high cutting edge stability. Light and medium machining. For non-ferrous metals and non-metals. N HF-N15 B154 widia.com