Speed & Feed Data for High Speed End Mills
Starting Point Speed & Feed Ranges

Material Type:	Cold Work Tool Steel - Wrought
Condition:	Annealed
Grade:	A2
Brinell:	200-250

Peripheral Machining

Axial Depth (A.D.) = Dia. X 1.5 Max.

Radial Depth (R.D.) Ratio	Surface Feet per Minute (S.F.P.M.)
	Finishing End Mill			Roughing End Mill
	STD.	TiN.	TiCN.	STD.	TiN.	TiCN.
DIA./16	90	104	117	108	130	151
DIA./8	70	81	91	84	101	118
DIA./4	60	69	78	72	86	101
DIA./2	50	58	65	60	72	84

Feed per Tooth (F.P.T.) by Diameter Note: Increase F.P.T. by 25% to 35% for 60 Degree end mills Note: Increase F.P.T. by 25% for TiCN coating.
1/4"	3/8"	1/2"	5/8"	3/4"	7/8"	1." & Up
.0013	.0019	.0025	.0031	.0038	.0044	.0050
.0010	.0015	.0020	.0025	.0030	.0035	.0040
.0008	.0011	.0015	.0019	.0023	.0026	.0030
.0005	.0008	.0010	.0013	.0015	.0018	.0020

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Slot Machining

Radial Depth (R.D.) = Tool Dia.

Axial Depth (A.D.) Ratio	Surface Feet per Minute (S.F.P.M.)
	Finishing End Mill			Roughing End Mill
	STD.	TiN.	TiCN.	STD.	TiN.	TiCN.
DIA./8	50	58	65	60	72	84
DIA./4	45	52	59	54	65	76
DIA./2	40	46	52	48	58	67
DIA./1	35	40	46	42	50	59

Feed per Tooth (F.P.T.) by Diameter Note: Increase F.P.T. by 25% to 35% for 60 Degree end mills Note: Increase F.P.T. by 25% for TiCN coating.
1/4"	3/8"	1/2"	5/8"	3/4"	7/8"	1." & Up
.0013	.0019	.0025	.0031	.0038	.0044	.0050
.0011	.0015	.0020	.0025	.0030	.0035	.0040
.0008	.0011	.0015	.0019	.0023	.0026	.0030
.0005	.0008	.0010	.0013	.0015	.0018	.0020