TPU

composition: A newly developed, advanced cobalt-enriched carbide
grade with a thick alumina coating.
application: A versatile performer on a wide range of workpiece
materials (steels, stainless steels, and cast irons) for roughing through
finishing operations. This highly wear-resistant grade can operate with
or without coolant at high speeds, and has exceptional edge strength
for interrupted cuts. The micro-finished insert edge resists workpiece
build-up and microchipping, and produces excellent surface finishes.
For machining steels and cast irons, your first choices are the -RN and
-MN geometries. For medium machining applications and finishing
cuts, the -MP and -FP geometries with a positive rake are suggested.