Cutting Speeds

Determine the spindle speed for turning, milling, drilling, and reaming with these charts and cutting speed calculators.

Milling Drilling & Reaming Top

Turning speeds are adjusted to the feed rate of the mini lathe (0.004/rev.), a depth of cut of 0.040, and a tool life of 180 minutes.

Material	AISI/SAE/ASTM Designation	HSS Feet/Minute	Carbide Feet/Minute
Free machining plain carbon steels (resulfurized)	1212, 1213, 1215	270 - 290	820 - 1045
Free machining plain carbon steels	1108, 1109, 1115, 1117, 1118, 1120, 1126, 1211	215 - 235	950
Free machining plain carbon steels	1132, 1137, 1139, 1140, 1144, 1146, 1151	70 - 215	670 - 800
Free machining plain carbon steels (Leaded)	11L17, 11L18, 12L13, 12L14	200 - 260	800 - 820
Plain carbon steels	1006, 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1513, 1514	125 - 215	800 - 885
Plain carbon steels	1027, 1030, 1033, 1035, 1036, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1045, 1046, 1048, 1049, 1050, 1052, 1524, 1526, 1527, 1541	55 - 180	670 - 970
Free machining alloy steels (resulfurized):	4140, 4150	70 - 200	430 - 685
Water hardening tool steel	W1, W2, W5	180	590
Cold work, oil hardening tool steel	O1, O2, O6, O7	125	590
Cold work, air hardening tool steel	A2, A3, A4, A6, A7, A8, A9, A10	80 - 125	355 - 365
Stainless steels (Austenitic)	201, 202, 301, 302, 304, 304L, 305, 308, 321, 347, 348	115 - 135	570
Cast Iron	ASTM Class 20, 25, 30, 35, 40	145 - 215	410
Brass	C35600, C37700, C36000, C33200, C34200, C35300, C48500, C34000	300 - 350	1170
Bronze	C65500, C22600, C65100, C67500	200 - 250	715
Wrought aluminum	6061-T6, 5000, 6000, and 7000 series.	500 - 600	2820
Cast aluminum	Sand and permanent mold casting alloys	600 - 750	2820

Turning Drilling & Reaming Top

Material	AISI/SAE/ASTM Designation	Feet/Minute
Free machining plain carbon steels (resulfurized)	1212, 1213, 1215	130 - 140
Free machining plain carbon steels	1108, 1109, 1115, 1117, 1118, 1120, 1126, 1211	115 - 130
Free machining plain carbon steels	1132, 1137, 1139, 1140, 1144, 1146, 1151	35 - 70
Free machining plain carbon steels (Leaded)	11L17, 11L18, 12L13, 12L14	110 - 140
Plain carbon steels	1006, 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1513, 1514	65 - 110
Plain carbon steels	1027, 1030, 1033, 1035, 1036, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1045, 1046, 1048, 1049, 1050, 1052, 1524, 1526, 1527, 1541	25 - 100
Free machining alloy steels (resulfurized)	4140, 4150	35 - 100
Water hardening tool steel	W1, W2, W5	85
Cold work, oil hardening tool steel	O1, O2, O6, O7	50
Cold work, air hardening tool steel	A2, A3, A4, A6, A7, A8, A9, A10	40 - 50
Stainless steels (Austenitic)	201, 202, 301, 302, 304, 304L, 305, 308, 321, 347, 348	70 - 75
Cast Iron	ASTM Class 20, 25, 30, 35, 40	70 - 100
Brass	C33200, C34000, C34200, C35300, C35600, C36000, C37700, C48500	100 - 200
Bronze	C22600, C65100, C65500, C67500	30 - 80
Wrought aluminum	6061-T6, 5000, 6000, and 7000 series.	165
Cast aluminum	Sand and permanent mold casting alloys	165

Turning Milling Top

Material	AISI/SAE/ASTM Designation	Drilling Feet/Minute	Reaming Feet/Minute
Free machining plain carbon steels (resulfurized)	1212, 1213, 1215	120 - 125	80
Free machining plain carbon steels	1108, 1109, 1115, 1117, 1118, 1120, 1126, 1211	100 - 120	75 - 80
Free machining plain carbon steels	1132, 1137, 1139, 1140, 1144, 1146, 1151	35 - 70	20 - 45
Free machining plain carbon steels (Leaded)	11L17, 11L18, 12L13, 12L14	90 - 130	60 - 85
Plain carbon steels	1006, 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1513, 1514	60 - 100	40 - 65
Plain carbon steels	1027, 1030, 1033, 1035, 1036, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1045, 1046, 1048, 1049, 1050, 1052, 1524, 1526, 1527, 1541	25 - 90	15 - 60
Free machining alloy steels (resulfurized)	4140, 4150	30 - 90	15 - 60
Water hardening tool steel	W1, W2, W5	85	55
Cold work, oil hardening tool steel	O1, O2, O6, O7	45	30
Cold work, air hardening tool steel	A2, A3, A4, A6, A7, A8, A9, A10	30 - 50	20 - 35
Stainless steels (Austenitic)	201, 202, 301, 302, 304, 304L, 305, 308, 321, 347, 348	50 - 55	30 - 35
Cast Iron	ASTM Class 20, 25, 30, 35, 40	80 - 100	50 - 65
Brass	C35600, C37700, C36000, C33200, C34200, C35300, C48500, C34000	160 - 175	160 - 175
Bronze	C65500, C22600, C65100, C67500	120 - 140	110 - 120
Wrought aluminum	6061-T6, 5000, 6000, and 7000 series.	350 - 400	350 - 400
Cast aluminum	Sand and permanent mold casting alloys	350 - 400	350 - 400