Technical Information Grades and Grade Descriptions Modern coating technologiesprovide higher speed capabilities,PSteel greater productivity, and longer M Stainless Steel tool life. K Cast Iron Each insert has a material grid N Non-Ferrous indicating primary and alternate uses for that tool, as well as S High-Temp Alloys whether it can be operated H Hardened Materials dry or with coolant. primary use alternate use WWW Light (finishing) ¢¢¢ Light (finishing) WW Medium ¢¢ Medium W Heavy (roughing) ¢ Heavy (roughing) Grade P M K N S H dry withcoolant TN2505 ¢¢¢ WWW WWW • HC-H05 • PVD-TiAlN TN2510 ¢¢ WW WW • HC-H10 • MT-CVD/CVD-TiN-TiCN- (ZrO2-Al2O3-TiOx) TN2525 WW ¢¢ WW • HC-H20 • PVD-TiAlN TN6501 WWW • • HC-N03 • PVD-TiB2 TN6510 WW • HC-K10 • PVD-TiAlN Nanolayer TN6520 WW • • HC-K20 • PVD-TiAlN Nanolayer G16 widia.com