The material of the end mill is important for understanding the level of cutting the machine can handle. Materials like carbide, cobalt, and diamond are hard and can be used in high-speed applications ...
Top Quality: The End Mill Round Top with 2-Flute,Made from HRC55 Carbide with AlTiN Coated that is very tough, resists wear and offers high cutting performan; AlTiN Coating: Titanium aluminum ...
How about at 20,000 frames-per-second? I'm in the shop playing with a high speed camera, filming Online Carbide 1/4" 4FL variable helix end mill on mild steel with my AvidCNC Benchtop Pro.