ISOTURN INSERTS UNCOATEDCERMET USER GUIDE ISCAR Turning Grades Chart Grade ISO Grade Description Coating Layers Coating Color* Uncoated A very hard-uncoated carbide grade, suitable for IC4 machining aluminum alloys, aluminum alloys with highN01-N15silicon content and other non-ferrous materials at high S05-S15 cutting speeds. Base M15-M30 A tough uncoated submicron carbide grade, suitable for IC08 steels, stainless steel and high temperature alloys at low N10-N25 cutting speeds. Good choice for non-ferrous materials. S20-S30 Base A hard-uncoated carbide grade for machining aluminum K10-K20 and other non-ferrous materials at medium to high IC20 cutting speeds. Can be used for cast iron at low cutting N05-N25 speeds. Suitable also for machining high temperature S10-S20 and Titanium alloys, at low cutting speeds. H10-H20 Base P05-P25 A very hard cermet grade for turning and grooving. M05-M15 Recommended for finishing operations on steels and IC20N alloy steels at high cutting speeds and low feeds.Features excellent surface finish, high wear resistance, plastic deformation durability and prevents built-up edge. Base P10-P30 M10-M20 A hard cermet grade, suitable for machining, steels and IC30N stainless steel at medium to high cutting speeds andlow feeds.Features excellent surface finish, very good wear resistance and prevents built-up edge. Base * For coated grades 250 ISCAR