9 MILLING GRADES – OVERVIEW Resistance to adverse Grade Identification Working Conditions Grade description Area of Application Coolant benefit Cutting speed Application Substrate Coating Colour Feed P05 – P25 Milling grade with high abrasion resistance even at high thermal loads, main M9315 K10 – K30 MT-CVD --- H application area is higher cutting speeds with medium or small depths of cut. H10 – H20 P10 – P30 This grade has an ideal balance between wear resistance and toughness, it is mainly designed for roughing operations. Advantages are excellent wear resistance even at M9325 K10 – K30 MT-CVD --- H relatively high cutting speeds with excellent reliability, this grade is more suitable for applications using higher speeds and lower feed rates. H15 – H20 P35 – P50 A very tough grade, where the main advantage is the high strength of the cutting edge and resistance to adverse cutting conditions. Although this material has an MT-CVD M9340 M30 – M40 MT-CVD --- H M30 – M40 coating, it is possible to use emulsion cooling for its application, especially in optimum cutting conditions. S15 – S20 P05 – P20 One of the most abrasion-resistant milling grades which should be used under stable conditions. Its main advantage is the extremely high resistance to thermal stress and M5315 K05 – K25 MT-CVD --- H abrasive K05 – K25 wear. It is mainly used for machining hard and very hard materials, particularly cast iron. H05 – H20 P01 – P10 Grade specially developed for copy milling, featuring high resistance to abrasion. It is submicron H M01 – M10 suitable for machining at higher cutting speeds under stable cutting conditions, and for M8310 ultra PVD - K01 – K10 machining virtually all groups of machined materials (particularly stronger and harder materials). H05 – H15 P10 – P20 M10 – M20 One of the most versatile milling grades, in terms of both the range of workpiece submicron H K10 – K25 materials and the range of possible applications. It is characterised by high wear 8215 PVD + / - resistance and operational reliability. Its other advantages include excellent resistance N10 – N25 to cracking induced by temperature shock. With its unique properties, this material is undoubtedly one of the pillars of the milling range. S10 – S15 H10 – H15 P20 – P40 The main application area of this grade is machining all kinds of steels (including M8325 PVD - stainless) in the “soft state“. It can also be used for machining softer cast irons. Suitable S M15 – M30 for M15 – M30 machining at medium speeds under average cutting conditions. P20 – P40 M20 – M35 submicron H K20 – K40 This grade is universal and can be used for machining various types of materials. M8330 PVD + / - However, it’s priority application area lies within steels and ductile cast irons. It is N15 – N30 recommended for milling at medium speeds under unstable cutting conditions. S15 – S25 H15 – H25 P25 – P50 Grade specially developed for copy milling, featuring high resistance to abrasion. It is submicron H M20 – M40 suitable for machining at higher cutting speeds under stable cutting conditions, and for M8340 PVD +/- machining virtually all groups of machined materials (particularly stronger and harder K20 – K40 materials). S20 – S30 325