ISCAR Milling Grades Chart Grades ISO Coating Layers Recommended Applications P10-P30 A cermet grade. Provides excellent resistance to wear and plastic deformation even at high cutting speeds M10-M20 IC30N and medium feeds. Useful for turning and milling of semi-finishing and finishing applications. H10-H25 M10-M30 An uncoated, fine grain carbide grade. Used for high temperature alloys and stainless steel at low to medium cutting speeds. IC07 S10-S30 M10-M25 K10-K20 An uncoated carbide grade. Used for semi-finishing, finishing and semi-roughing of aluminum, cast iron and stainless steel. N05-N25 S05-S20 IC20 Used at low to medium speeds and feeds. H05-H15 M10-M30 N10-N25 An uncoated, fine grain carbide grade. Used for stainless steel and high temperature alloys at low to medium cutting speeds. IC08 S10-S30 N10-N30 P30-P50 An uncoated carbide grade. Used mainly for machining aluminum at medium cutting speeds with medium to large chip sections. MATERIALS AND GRADES M30-M40 IC28 The inserts usually feature very sharp cutting angles. S20-S25 P20-P30 An uncoated carbide grade. Recommended for semi-finishing to rough steel milling with medium to large chip sections. IC50M K05-K15 H10-H30 A 55% CBN brazed tip, used for finishing hardened steel (45-65 HRc) in continuous cutting. IB55 An 85% CBN brazed tip, used for high speed turning of cast iron, cemented tungsten carbide, sintered metals and heavy alloys. K01-K15 IB85 Excellent for interrupted cutting of hardened steel. N01-N10 A PCD brazed tip, suitable for machining aluminum (Si < 12%) and copper alloys and general cutting of nonferrous materials. ID5 A PCD grade for milling applications. Ideal for machining nonferrous metals, such as high silicon (>12%) aluminum alloys and N05-N15 ID8 metal matrix composites. Typical components: engine, gearbox and transmission components, disk brakes, glass epoxy parts, etc. A silicon nitride grade, used for medium turning and milling applications. Can be used for interrupted cuts. IS8 K01-K20 SILICON NITRIDE Cutting speed range: 100-1500 m/min, feed range: 0.1-1.0 mm/rev. CERMET UNCOATED CBN PCD CERAMICS 1004 ISCAR