USER GUIDE MATERIALS AND GRADES ISCAR Milling Grades Chart Grade ISO Grade Description Coating Layers Coating Color* A CVD multi-layer coating with SUMOTEC post coating surface K10-K25 TiN IC5100 treatment. Recommended for milling grey cast iron at high cutting Al2O3 speeds, and provides extended tool life. TiCN Base P10-P20 M10-M25 A tough substrate with MTCVD coating. Recommended for milling TiN IC5400 steel at high cutting speed and for parting stainless steel. CVD COATED Al2O3 TiCN Base P20-P35 A tough substrate with CVD coating. Recommended for TiN IC5500 machining martensitic stainless steel at high cutting speed. Al2O3 Provides excellent tool life. TiCN Base M20-M35 A tough substrate, with a MTCVD coating and special SUMOTEC TiN IC5820 post coating surface treatment. Designed for machining austenitic Al2O3 stainless steel, Titanium and high temperature alloys. S15-S25 TiCN Base DLC A submicron DLC coated grade for machining mainly aluminum IC1508 N10-N20 and non-ferrous materials. DLC Base * For coated grades Grade ISO Grade Description Uncoated Layers Uncoated A very hard-uncoated carbide grade, suitable for machining IC4 aluminum alloys, aluminum alloys with high silicon content and N05-N15 other non-ferrous materials at high cutting speeds. S05-S15 Base UNCOATED M10-M20 A hard-uncoated submicron grain size carbide grade, suitable IC07 for machining aluminum alloys and other non-ferrous materials at N05-N20 high cutting speeds. S10-S30 Base M10-M30 A tough uncoated submicron grain size carbide grade, suitable for IC08 steels, stainless steel and high temperature alloys at low cutting N10-N25 speeds. Good choice for non-ferrous materials. S10-S30 Base 724 ISCAR