Workpiece Materials	Speed: Vc (m/min)	Feed: f (m/min)	DOC: ap (max) (mm)	NC45	NT5	N50	N90	NB9
Hardened Steels
Alloy Steel (Continuous)	120 - 220	0.05 - 0.2	0.3
Alloy Steel (Interrupted)	100 - 180	0.05 - 0.2	0.2
Tool Steel	70 - 120	0.13 - 0.25	2.5
Bearing Steel	120 - 180	0.05 - 0.2	2
Carbon Steel	100 - 180	0.1 - 0.25	2.5
Cast Iron
White/Chilled	40 - 120	0.1 - 1	5
Gray	600 - 1200	0.05 - 0.8	4
Nodular	180 - 300	0.1 - 0.5	0.5
Super Alloys
Co Based	120 - 220	0.15 - 1	2
Ni Based	120 - 180	0.15 - 1	2
Fe Based	60 - 120	0.15 - 1	2
Powder Metal
> 40 HRC	80 - 200	0.1 - 0.3
Sprayed Hard Facing
	60 - 250	0.1 - 0.3	1.5
Sintered Tungsten Carbide
> 18% Co	40 - 80	0.05 - 0.2	0.5

Primary Choice
Secondary Choice

Guidelines:
	The main factors influencing the selection of PCBN grades include a combination of considerations: workpiece material, operation type, machining parameters, surface finish requirements, and tool geometry.
	Machining parameters are indicated in general ranges as a starting guideline.
	Technical support is available and is recommended for application optimization.