Transcription of Kennametal Grade System for Cutting Materials
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Kennametal Grade System for Cutting Materials
A28 Kennametal Grade System for Cutting MaterialsGrade Selection TableTURNING INSERTSTURNING HOLDERSBORING HEADSBORING BARSTOOLHOLDERSSCREW-ONKENDEXKENLOCCARTR IDGESTypeGradeCoatingComposition and Application05 Standard designationWear resistanceToughnessArea of use10 15 20 254530 35 40 Uncoated Carbide GradesC3 C4 PMKNSHK313composition:A hard, low binder content, unalloyed WC/Co fine-grained :Exceptional edge wear resistance combined with very highstrength for machining titanium, cast irons, austenitic stainless steels,non-ferrous metals, nonmetals, and most high-temperature thermal deformation and depth of cut notch resistance. The grain structure is well controlled for minimal pits and flaws, whichcontributes to long, reliable :A hard, low binder content, unalloyed Grade WC/Co fine-grained :The K68 Grade has excellent abrasion resistance formachining cast irons, austenitic stainless steels, non-ferrous metals,nonmetals and as an alternative to the K313 Grade on most high-temperature alloys.
The substrate is unalloyed and fine grained and offers sharp edges, smooth surfaces, and excellent thermal deformation resistance and edge integrity. Inserts with a ground periphery are polished before coating and have a sharp edge. Molded inserts have a light hone. KC5410 P M K N S H KC5025 improved C2, C6
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