Recommended Cutting Speeds in Feet per Minute for Turning, Milling, Drilling, and Reaming Plain Carbon and Alloy Steels

Material
AISI and SAE Steels
Hardness
HBa
Material
Condition
Cutting Speed, sfpm HSS
Turning Milling Drilling Reaming
Free Machining Plain Carbon Steels (Resulferized)
1212, 1213, 1215 100-150

150-200

HR, A

CD

150

160

140

130

120

125

80

80

1108, 1109, 1115, 1117, 1118, 11220,
1126, 1211
100-150

150-200

HR, A

CD

130

120

130

115

110

120

75

80

1132, 1137, 1139, 1140, 1144, 1146,
1151
175-225

275-325

325-375

375-425

HR, A, N, CD

Q and T

Q and T

Q and T

120

75

50

40

115

70

45

35

100

70

45

35

65

45

30

20

Free Machining Plain Carbon Steels (Leaded)
11L17, 11L18, 12L13, 12L14 100-150

150-200

200-250

HR, A, N, CD

HR, A, N, CD

N, CD

140

145

110

140

130

110

130

120

90

85

80

60

Plain Carbon Steels
1006, 1008, 1009, 1010, 1012, 1015,
1016, 1017, 1018, 1019, 1020, 1021,
1022, 1023, 1024, 1025, 1026, 1513,
1514
100-125

125-175

175-225

225-275

HR, A, N, CD

HR, A, N, CD

HR, N, CD

CD

120

110

90

70

110

110

90

65

100

90

70

60

65

60

45

40

1027, 1030, 1033, 1035, 1036, 1037,
1038, 1039, 1040, 1041, 1042, 1043,
1045, 1046, 1048, 1049, 1050, 1052,
1152, 1524, 1526, 1527, 1541
125-175

175-225

225-275

275-325

325-375

375-425

HR, A, N, CD

HR, A, N, CD

N, CD, Q and T

Q and T

Q and T

Q and T

100

85

70

60

40

30

100

85

70

55

35

25

90

75

60

50

35

25

60

50

40

30

20

15

1055, 1060, 1064, 1065, 1070, 1074,
1078, 1080, 1084, 1086, 1090, 1095,
1548, 1551, 1552, 1561, 1566
125-175

175-225

225-275

275-325

325-375

375-425

HR, A, N, CD

HR, A, N, CD

N, CD, Q and T

Q and T

Q and T

Q and T

100

80

65

50

35

30

90

75

60

45

30

15

85

70

50

40

30

15

55

45

30

25

20

10

Free Machining Alloy Steels (Resulferized)
4140, 4150 175-200

200-250

250-300

300-375

375-425

HR, A, N, CD

HR, N, CD

Q and T

Q and T

Q and T

110

90

65

50

40

100

90

60

45

35

90

80

55

40

30

60

50

30

25

15

Free Machining Alloy Steels (Leaded)
41L30, 41L40, 41L47, 41L50
43L47, 51L32, 52L100, 86L20,
86L40
150-200

200-250

250-300

300-375

375-425

HR, A, N, CD

HR, N, CD

Q and T

Q and T

Q and T

120

100

75

55

50

115

95

70

50

40

100

90

65

45

30

65

60

40

30

15

Alloy Steels
4012, 4023, 4024, 4028, 4118, 4320,
4419, 4422, 4427, 4615, 4620, 4621,
4626, 4718, 4720, 4815, 4817, 4820,
5015, 5117, 5120, 6118, 8115, 8615,
8617, 8620, 8622, 8625, 8627, 8720,
8822, 94B17
125-175

175-225

225-275

275-325

325-375

375-425

HR, A, N, CD

HR, A, N, CD

CD, N, Q and T

Q and T

Q and T

Q and T

100

90

70

60

50

35

100

90

60

50

40

25

85

70

55

50

35

25

55

45

35

30

25

15

1330, 1335, 1340, 1345, 4032, 4037,
4042, 4047, 4130, 4135, 4137, 4140,
4142, 4145, 4147, 4150, 4161, 4337,
4340, 50B44, 50B46, 50B50,
50B60, 5130, 5132, 5140, 5145,
5147, 5150, 5160, 51B60, 6150,
81B45, 8630, 8635, 8637, 8640,
8642, 8645, 8650, 8655, 8660,
8740, 9254, 9255, 9260, 9262, 94B30
175-225

225-275

275-325

325-375

375-425

HR, A, N, CD

N, CD, Q and T

N, Q and T

N, Q and T

Q and T

85

70

60

40

30

75

60

50

35

20

75

60

45

30

20

50

40

30

15

15

E51100, E52100 175-225

225-275

275-325

325-375

375-425

HR, A, CD

N, CD, Q and T

N, Q and T

N, Q and T

Q and T

70

65

50

30

20

65

60

40

30

20

60

50

35

30

20

40

30

25

20

10

Ultra High Strength Steels (Not AISI)
AMS 6421 (98B37 Mod.), AMS 6422
(98BV40), AMS 6424, AMS 6427,
AMS 6428, AMS 6430, AMS 6432,
AMS 6433, AMS 6434, AMS 6436,
AMS 6442, 300M, D6ac
220-300

300-350

350-400

43-48 HRC

48-52 HRC

A

N

N

Q and T

Q and T

65

50

35

25

10

60

45

20

-

-

50

35

20

-

-

30

20

10

-

-

Maraging Steels (Not AISI)
18% Ni Grade 200,
18% Ni Grade 250,
18% Ni Grade 300,
18% Ni Grade 350
250-325

50-52 HRC

A

Maraged

60

10

50

-

50

-

50

-

Nitriding Steels (Not AISI)
Nitralloy 125, Nitralloy 135,
Nitralloy 135 Mod., Nitralloy 225,
Nitralloy 230, Nitralloy N,
Nitralloy EZ, Nitrex I
200-250

300-350

A

N, Q and T

70

30

60

25

60

35

40

20

a Abbreviations designate: HR, hot rolled; CD, cold drawn; A, annealed; N, normalized; Q and T, quenched and tempered; and HB Brinell hardness number.

Speeds for turning based on a feed rate of 0.012 inch per revolution and a depth of cut of 0.125 inch.

Recommended Cutting Speeds in Feet per Minute for Turning, Milling, Drilling, and Reaming Ferrous Cast Metals

Material Hardness
HBa
Material
Condition
Cutting Speed, sfpm HSS
Turning Milling Drilling Reaming
Gray Cast Iron
ASTM Class 20

ASTM Class 25

ASTM Class 30, 35 and 40

ASTM Class 45 and 50

ASTM Class 55 and 60

ASTM Type 1, 1b, 5 (Ni Resist)

ASTM Type 2, 3, 6 (Ni Resist)

ASTM Type 2b, 4 (Ni Resist)

120-150

160-200

190-220

220-260

250-320

100-215

120-175

150-250

A

AC

AC

AC

AS, HT

AC

AC

AC

120

90

80

60

35

70

65

50

100

80

70

50

30

50

40

30

100

90

80

60

30

50

40

30

65

60

55

40

20

30

25

20

Malleable Iron
(Ferritic), 32510, 35018 110-160 MHT 130 110 110 75
(Pearlitic), 40010, 43010, 45006,
45008, 48005, 50005
160-200

200-240

MHT

MHT

95

75

80

65

80

70

55

45

(Martensitic), 53004, 60003, 60004

(Martensitic), 70002, 70003

(Martensitic), 80002

(Martensitic), 90001

200-255

220-260

240-280

250-320

MHT

MHT

MHT

MHT

70

60

50

30

55

50

45

25

55

50

45

25

35

30

30

15

Nodular (Ductile) Iron
(Ferritic), 60-40-18, 65-45-12 140-190 A 100 75 100 65
(Ferritic-Pearlitic), 80-55-06 190-225

225-260

AC

AC

80

65

60

50

70

50

45

30

(Pearlitic-Martensitic), 100-70-03 240-300 HT 45 40 40 25
(Martensitic), 120-90-02 270-330

330-400

HT

HT

30

15

25

-

25

10

15

5

Cast Steels
(Low Carbon), 1010, 1020 100-150 AC, A, N 110 100 100 65
(Medium Carbon), 1030, 1040,
1050
125-175

175-225

225-300

AC, A, N

AC, A, N

AC, HT

100

90

70

95

80

60

90

70

55

60

45

35

(Low Carbon Alloy), 1320, 2315,
2320, 4110, 4120, 4320, 8020,
8620
150-200

200-250

250-300

AC, A, N

AC, A, N

AC, HT

90

80

60

85

75

50

75

65

50

50

40

30

(Medium Carbon Alloy), 1330,
1340, 2325, 2330, 4125, 4130,
4140, 4330, 4340, 8030, 80B30,
8040, 8430, 8440, 8630, 8640,
9525, 9530, 9535
175-225

225-250

250-300

300-350

350-400

AC, A, N

AC, A, N

AC, HT

AC, HT

HT

80

70

55

45

30

70

65

50

30

-

70

60

45

30

20

45

35

30

20

10

a Abbreviations designate: A, annealed; AC, as cast; N, normalized; HT, heat treated; MHT, malleabilizing heat treatment; and HB Brinell hardness number.

Speeds for turning based on a feed rate of 0.012 inch per revolution and a depth of cut of 0.125 inch.

Recommended Cutting Speeds in Feet per Minute for Turning, Milling, Drilling, and Reaming Stainless Steels

Material Hardness
HBa
Material
Condition
Cutting Speed, sfpm HSS
Turning Milling Drilling Reaming
Free Machining Stainless Steels (Ferritic)
430F, 430F Se 135-185 A 110 95 90 60
(Austenitic), 203EZ, 303,
303Se, 303MA, 303Pb,
303Cu, 303 Plus X
135-185

225-275

A

CD

100

80

90

75

85

70

55

45

(Martensitic), 416, 416Se,
416Plus X, 420F, 420FSe
440F, 440FSe
135-185

185-240

275-325

375-425

A

A, CD

Q and T

Q and T

110

100

60

30

95

80

50

20

90

70

40

20

60

45

25

10

Stainless Steels
(Ferritic), 405, 409, 429, 430,
434, 436, 442, 446, 502
135-185 A 90 75 65 45
(Austenitic), 201, 202, 301
302, 304, 304L, 305, 308, 321
347, 348
135-185

225-275

A

CD

75

65

60

50

55

50

35

30

(Austenitic), 302B, 309, 309S
310, 310S, 314, 316, 316L,
317, 330
135-185 A 70 50 50 30
(Martensitic), 403, 410, 420,
501
135-175

175-225

275-325

375-425

A

A

Q and T

Q and T

95

85

55

35

75

65

40

25

75

65

40

25

50

45

25

15

(Martensitic), 414, 431, Greek
Ascoloy
225-275

275-325

375-425

A

Q and T

Q and T

60

50

30

55

45

25

50

40

25

30

25

15

(Precipitation Hardening), 15-
5PH, 17-4PH, 17-7PH, AF-71,
17-14CuMo, AFC-77,
AM-350, AM-355, AM-362,
Custom 455, HMN, PH13-8,
PH14-8Mo, PH15-7Mo,
Stainless W
150-200

275-325

325-375

375-450

A

H

H

H

60

50

40

25

60

50

40

25

50

45

35

20

30

25

20

10

a Abbreviations designate: A, annealed; CD, cold drawn; N, normalized; H, percipitation hardened; Q and T, quenched and tempered; and HB Brinell hardness number.

Speeds for turning based on a feed rate of 0.012 inch per revolution and a depth of cut of 0.125 inch.

Recommended Cutting Speeds in Feet per Minute for Turning, Milling, Drilling, and Reaming Tools Steels

Material
Tool Steels (AISI Types)
Hardness
HBa
Material
Condition
Cutting Speed, sfpm HSS
Turning Milling Drilling Reaming
Water Hardening W1, W2, W5

Shock Resisting S1, S2, S5, S6, S7

Cold Work, Oil Hardening O1, O2, O6, O7

Cold Work, High Carbon High Chromium
D2, D3, D4, D5, D7

Cold Work, Air Hardening A2, A3, A8, A9, A10

A4, A6

A7

150-200

175-225

175-225

200-250

200-250

200-250

225-275

A

A

A

A

A

A

A

100

70

70

45

70

55

45

85

55

50

40

50

45

40

85

50

45

30

50

45

30

55

35

30

20

35

30

20

Hot Work, Chromium Type
H10, H11, H12, H13, H14, H19
150-200

200-250

325-375

48-50 HRC

50-52 HRC

52-54 HRC

54-56 HRC

A

A

Q and T

Q and T

Q and T

Q and T

Q and T

80

65

50

20

10

-

-

60

50

30

-

-

-

-

60

50

30

-

-

-

-

40

30

20

-

-

-

-

Hot Work, Tungsten Type
H21, H22, H23, H24, H25, H26
150-200

200-250

A

A

60

50

55

45

55

40

35

25

Hot Work, Molybdenum Type
H41, H42, H43
135-185

225-275

A

A

55

45

55

45

45

35

30

20

Special Purpose, Low Alloy L2, L3, L6

Mold P2, P3, P4, P5, P6

P20, P21

High Speed Steel M1, M2, M6, M10, T1, T2, T6

M3-1, M4, M7, M30, M33, M34, M36, M41,
M42, M43, M44, M46, M47, T5, T8

T15, M3-2

150-200

100-150

150-200

200-250

225-275

225-275

A

A

A

A

A

A

75

90

80

65

55

45

65

75

60

50

40

30

60

75

60

45

35

25

40

50

40

30

20

15

a Abbreviations designate: A, annealed; Q and T, quenched and tempered; and HB Brinell hardness number and HRC, Rockwell C scale hardness number.

Speeds for turning based on a feed rate of 0.012 inch per revolution and a depth of cut of 0.125 inch.

Recommended Cutting Speeds in Feet per Minute for Turning, Milling, Drilling, and Reaming Light Metals

Material
Light Metals
Material
Condition
Cutting Speed, sfpm HSS
Turning Milling Drilling Reaming
All Wrought Aluminum Alloys CD

ST and A

600

500

600

500

400

350

400

350

All Aluminum Sand and Permanent
Mold Casting Alloys
AC

ST and A

750

600

750

600

500

350

500

350

All Aluminum Die Casting Alloys AC

ST and A

125

100

125

100

300

70

300

70

except Alloys 390.0 and 392.0 AC

ST and A

80

60

80

60

125

45

100

40

All Wrought Magnesium Alloys A, CD, ST and A 800 800 500 500
All Cast Magnesium Alloys A, AC, ST and A 800 800 450 450

a Abbreviations designate: A, annealed; AC, as cast; CD, cold drawn; ST and A, solution treated as aged.

Recommended Cutting Speeds in Feet per Minute for Turning and Drilling Titanium and Titanium Alloys

Material
Titanium and Titanium Alloys
Material
Conditiona
Hardness
HBa
Cutting
Speed, sfpm
HSS
Commercially Pure
99.5 Ti

99.1 Ti, 99.2 Ti

99.0

A

A

A

110-150

180-240

250-275

110

90

70

Low Alloyed
99.5 Ti - 0.15 Pd

99.2 Ti - 0.15 Pd, 98.9 Ti - 0.8 Ni - 0.3 Mo

A

A

110-150

180-250

100

85

Alpha Alloys and Alpha-Beta Alloys
5A1-2.5 Sn, 8Mn, 2A1-11Sn-5Zr-1Mo, 4A1-3Mo-1V,
5A1-6Sn-2Zr-1Mo, 6A1-2Sn-4Zr-2Mo,
6A1-2Sn-4Zr-6Mo, 6A1-2Sn-4Zr-2Mo-0.25Si,
A

A

A

A

ST and A

ST and A

ST and A

300-350

310-350

320-370

320-380

320-380

375-420

375-440

50

40

30

20

40

20

20

Beta Alloys
13V-11Cr-3A1, 8Mo-8V-2Fe-3A1, 3A1-8V-6Cr-4Mo-4Zr,
11.5Mo-6Zr-4.5Sn
A, ST

ST and A

275-350

350-440

25

20

a Abbreviations designate: A, annealed; ST, solution treated; ST and A, solution treated as aged; and HB Brinell hardness number.

Recommended Cutting Speeds in Feet per Minute for Turning, Milling and Drilling* Superalloys

Material
Superalloys
Cutting Speed, sfpm
HSS
  Material
Superalloys
Cutting Speed, sfpm
HSS
Roughing Finishing   Roughing Finishing
A-286

AF21DA

Air Resist 213

Air Resist 13 and 215

Astroloy

B-1900

CW-12M

Discalloy

FSH-H14

GMR-235 and 235D

Hastelloy B, C, G and X (wrought)

Hastelloy B and C (cast)

Haynes 25 and 188

Haynes 36 and 151

HS 6, 21, 2, 31(X40), 36 and 151

IN 100 and 738

Incoloy 800, 801 and 802

Incoloy 804 and 825

Incoloy 901

Inconel 625, 702, 706, 718 (wrought),
721, 722, X750, 751, 901, 600, 604

Inconel 700 and 702

Inconel 713C and 718 (cast)

J1300

J1570

M252 (wrought)

M252 (cast)

30-35

8-10

15-20

10-12

5-10

8-10

8-12

15-35

10-12

8-10

15-20

8-12

15-20

10-12

10-12

8-10

30-35

15-20

10-20

15-20

10-12

8-10

15-25

15-20

15-20

8-10

35-40

10-15

20-25

10-15

5-15

8-10

10-15

35-40

10-15

8-10

20-25

10-15

20-25

10-15

10-15

8-10

35-40

20-25

20-35

20-25

12-15

8-10

20-30

20-25

20-25

8-10

  Mar-M200, M246, M421, M434

Mar-M905 and M918

Mar-M302, M322, and M509

N-12M

N-155

Nasa C-W-Re

Nimonic 75 and 80

Nimonic 90 and 95

Refractaloy 26

Rene 41

Rene 80 and 95

S-590

S-816

T-D Nickel

Udimet 500, 700, and 710

Udimet 630

Unitemp 1753

V-36

V-57

W-545

WI-52

Waspaloy

X-45

16-25-6

19-9DL

8-10

15-20

10-12

8-12

15-20

10-12

15-20

10-12

15-20

10-15

8-10

10-20

10-15

70-80

10-15

10-20

8-10

10-15

30-35

25-35

10-12

10-30

10-12

30-35

25-35

10-12

20-25

10-15

10-15

15-25

10-15

20-25

12-15

20-25

12-20

10-15

15-30

15-20

80-100

12-20

20-25

10-15

15-20

35-40

30-40

10-15

25-35

10-15

35-40

30-40

* For milling and drilling, use the cutter speeds recommended under roughing.