ANSI: RNMG-86A-NK4070
ISO: RNMG-86A-NK4070
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.
A strong substrate that is tougher than NK5750 and NK4675. Very good impact resistance. The grade is good for roughing to semi-finishing on cast irons, carbon steels, alloy steels and 200, 300 & 400 series stainless steel. Run at low to medium speed with heavy chip loads.
