Premium USA made 4 Flute Cobalt Single End Regular Length Roughing End Mill. Cobalt (M42) tools are more resistant to abrasion and can be run at higher cutting temperatures and feed rates than the average high speed steel (HSS) tools. This end mill has a Ball Nose end cut and is TiALN coated. TiALN (Titanium Aluminum Nitride) coating is a high performance coating, which excels at machining abrasive and difficult to machine materials such as cast iron, aluminum alloys, tool steels, and nickel alloys. TiALN's impoved ductility makes it an excellent choice for interrupted cutting operations. Its superior oxidation resistance provides unparalleled performance in high temperature machining. TiALN does not exhibit edge brittleness and can used for interrupted cuts without chipping. TiALN should be targeted at applications that generate the highest heat level at the tools cutting edge.
