Drilling speeds

Charts with recommended speeds for metal drilling. Whenever two different rpm values are shown for the same drill size / metal combination, they represent the recommended speed range.

DRILL SIZES 1 - 10MM 1 2 3 4 5 6 7 8 9 10
Free machining plain carbon steel (resulfurized)
1212, 1213, 1215
11660
12150
5820
6060
3880
4040
2910
3030
2330
2420
1940
2020
1660
1730
1450
1510
1290
1350
1160
1210
Free machining plain carbon steel
1108, 1109, 1115, 1117, 1118, 1120, 1126, 1211
9720
11660
4850
5820
3230
3880
2420
2910
1940
2330
1610
1940
1380
1660
1210
1450
1080
1290
970
1160
Free machining plain carbon steel
1132, 1137, 1139, 1140, 1144, 1146, 1151
3400
6800
1700
3400
1130
2260
850
1700
680
1360
560
1120
480
960
420
840
380
760
340
680
Free machining plain carbon steel (leaded)
11L17, 11L18, 12L13, 12L14
8750
12630
4370
6310
2910
4200
2180
3150
1750
2520
1450
2100
1250
1800
1090
1570
970
1400
870
1260
Plain carbon steel
1006, 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1513, 1514
5830
9720
2910
4850
1940
3230
1450
2420
1160
1940
970
1610
830
1380
730
1210
650
1080
580
970
Plain carbon steel
1027, 1030, 1033, 1035, 1036, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1045, 1046, 1048, 1049, 1050, 1052, 1524, 1526, 1527, 1541
2430
8750
1210
4370
800
2910
600
2180
480
1750
400
1450
350
1250
300
1090
270
970
240
870
Free machining alloy steel (resulfurized)
4140, 4150
2910
8750
1450
4370
970
2910
720
2180
580
1750
480
1450
410
1250
360
1090
320
970
290
870
Water hardening tool steel
W1, W2, W5
8260 4120 2750 2060 1650 1370 1180 1030 910 820
Cold work, oil hardening tool steel
O1, O2, O6, O7
4370 2180 1450 1090 870 730 620 540 480 430
Cold work, air hardening tool steel
A2, A3, A4, A6, A7, A8, A9, A10
2910
4860
1450
2430
970
1610
720
1210
580
970
480
810
410
690
360
600
320
540
290
480
Stainless steel
201, 202, 301, 302, 304, 304L, 305, 308, 321, 347, 348
4860
5340
2430
2670
1610
1780
1210
1330
970
1070
810
890
690
760
600
670
540
590
480
530
Cast Iron
ASTM Class 20, 25, 30, 35, 40
7770
9720
3880
4850
2580
3230
1940
2420
1550
1940
1290
1610
1110
1380
970
1210
860
1080
770
970
Brass
C35600, C37700, C36000, C33200, C34200, C35300, C48500, C34000
15550
17000
7760
8490
5170
5660
3880
4240
3100
3400
2580
2830
2210
2420
1940
2120
1720
1880
1550
1700
Bronze
C65500, C22600, C65100, C67500
11660
13600
5820
6790
3880
4530
2910
3390
2330
2710
1940
2260
1660
1940
1450
1700
1290
1510
1160
1360
Aluminium
6061-T6, 5000, 6000, and 7000 series, casting alloys
34020
38870
16990
19410
11320
12930
8490
9700
6790
7760
5660
6470
4850
5540
4240
4850
3770
4310
3390
3880


DRILL SIZES 11 - 25MM 11 12 13 14 15 16 18 20 22 25
Free machining plain carbon steel (resulfurized)
1212, 1213, 1215
1050
1100
970
1010
890
930
830
860
770
810
720
760
640
670
580
600
520
550
460
480
Free machining plain carbon steel
1108, 1109, 1115, 1117, 1118, 1120, 1126, 1211
880
1050
810
970
740
890
690
830
640
770
600
720
540
640
480
580
440
520
390
460
Free machining plain carbon steel
1132, 1137, 1139, 1140, 1144, 1146, 1151
310
620
280
560
260
520
240
480
220
440
210
420
190
380
170
340
150
300
130
260
Free machining plain carbon steel (leaded)
11L17, 11L18, 12L13, 12L14
790
1150
730
1050
670
970
620
900
580
840
540
780
480
700
430
630
390
570
350
500
Plain carbon steel
1006, 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1513, 1514
530
880
480
810
450
740
410
690
390
640
360
600
320
540
290
480
260
440
230
390
Plain carbon steel
1027, 1030, 1033, 1035, 1036, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1045, 1046, 1048, 1049, 1050, 1052, 1524, 1526, 1527, 1541
220
790
200
730
180
670
170
620
160
580
150
540
130
480
120
430
110
390
90
350
Free machining alloy steel (resulfurized)
4140, 4150
260
790
240
730
220
670
210
620
190
580
180
540
160
480
140
430
130
390
110
350
Water hardening tool steel
W1, W2, W5
750 690 630 590 550 510 460 410 370 330
Cold work, oil hardening tool steel
O1, O2, O6, O7
400 360 330 310 290 270 240 220 200 170
Cold work, air hardening tool steel
A2, A3, A4, A6, A7, A8, A9, A10
260
440
240
400
220
370
210
350
190
320
180
300
160
270
140
240
130
220
110
190
Stainless steel
201, 202, 301, 302, 304, 304L, 305, 308, 321, 347, 348
440
480
400
440
370
410
350
380
320
350
300
330
270
290
240
260
220
240
190
210
Cast Iron
ASTM Class 20, 25, 30, 35, 40
700
880
650
810
600
740
550
690
510
640
480
600
430
540
390
480
350
440
310
390
Brass
C35600, C37700, C36000, C33200, C34200, C35300, C48500, C34000
1410
1540
1290
1410
1190
1300
1110
1210
1030
1130
970
1060
860
940
770
850
700
770
620
680
Bronze
C65500, C22600, C65100, C67500
1050
1230
970
1130
890
1040
830
970
770
900
720
850
640
750
580
680
520
610
460
540
Aluminium
6061-T6, 5000, 6000, and 7000 series, casting alloys
3090
3530
2830
3230
2610
2980
2420
2770
2260
2580
2120
2420
1880
2150
1700
1940
1540
1760
1360
1550