Iscar ECKI-H4R 312-625C312C IC300 Dia 5/16 SH 0.3125 LOC 0.6250 OAL2.50 End Mill Standard Flute Coolant Standard Helix Carbide TiCN Single End 45.0° Chamfer0.0150 0.38mm SolidMill

Cemented carbides are a class of hard materials used extensively for cutting tools, as well as in other industrial applications. It consists of fine particles of carbide cemented into a composite by a binder metal. Cemented carbides commonly use tungsten carbide (WC), titanium carbide (TiC), or tantalum carbide (TaC) as the aggregate. Mentions of "carbide" or "tungsten carbide" in industrial contexts usually refer to these cemented composites. The cobalt content could vary from 5% to 23% base on application. 8% to 12% are the most common for cutting tools. Ruthenium is used to replace cobalt as a perfered binder for the best cutting performance.