| Cutting
Condition Chart # 5 - 4 Flute End Mills |
| Suggested
Speeds and Feeds |
| Side
Milling (Fractional) |
|
Work
Material
|
Aluminum
|
Cast Iron
|
Medium
Carbon Steel
Mild Steel
|
Pre-hardened,
Stainless, Die
& Alloy Steels
|
Pre-hardened,
Stainless Die
& Alloy Steels
|
Hardened
Steels
|
|
Hardness
|
|
|
|
<HRC30
|
HRC30-40
|
HRC40-50
|
|
Depth
of Cut
|
 |
|
Ad= 1.5D
Rd=0.1D
|
|
|
Mill
Diameter
(inch)
|
V=330-400 SFM
|
V=100-150 SFM
|
V=100-150 SFM
|
V=80-115 SFM
|
V=80-100 SFM
|
V=50 SFM
|
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
|
.030
|
40000
|
24.8
|
16000
|
6.9
|
14000
|
3.3
|
10000
|
2.0
|
10000
|
1.0
|
6000
|
0.6
|
|
3/64
|
31500
|
24.8
|
14000
|
9.6
|
11000
|
4.7
|
8000
|
3.3
|
8000
|
2.0
|
4800
|
0.8
|
|
1/16
|
21200
|
24.8
|
9500
|
9.6
|
7500
|
4.7
|
5300
|
3.3
|
5400
|
2.0
|
3200
|
0.8
|
|
5/64
|
16000
|
24.8
|
7100
|
13.8
|
5500
|
4.7
|
4000
|
3.3
|
4000
|
2.0
|
2400
|
0.8
|
|
1/8
|
12500
|
24.8
|
4750
|
16.5
|
4500
|
8.3
|
3550
|
6.7
|
3150
|
2.5
|
1600
|
1.4
|
|
5/32
|
9500
|
26.2
|
3550
|
16.5
|
3550
|
9.6
|
2650
|
6.7
|
2360
|
2.5
|
1200
|
1.4
|
|
3/16
|
7500
|
26.2
|
2800
|
16.5
|
2800
|
11.0
|
2120
|
6.7
|
1900
|
2.5
|
950
|
1.4
|
|
1/4
|
6300
|
26.2
|
2360
|
16.5
|
2360
|
11.0
|
1700
|
6.7
|
1600
|
2.5
|
800
|
1.4
|
|
5/16
|
4750
|
27.6
|
1800
|
16.5
|
1800
|
11.0
|
1320
|
6.7
|
1180
|
2.5
|
600
|
1.4
|
|
3/8
|
3750
|
27.6
|
1400
|
17.3
|
1400
|
12.2
|
1060
|
6.7
|
950
|
2.5
|
480
|
1.4
|
|
1/2
|
3150
|
30.7
|
1180
|
17.3
|
1180
|
12.2
|
850
|
6.7
|
800
|
2.5
|
400
|
1.4
|
|
5/8
|
2360
|
30.7
|
900
|
20.7
|
900
|
13.8
|
670
|
7.9
|
600
|
2.5
|
300
|
1.4
|
|
3/4
|
1900
|
30.7
|
710
|
20.7
|
710
|
13.8
|
530
|
8.3
|
475
|
2.5
|
240
|
1.4
|
|
1
|
1500
|
27.6
|
560
|
20.7
|
560
|
13.8
|
425
|
7.9
|
375
|
2.0
|
190
|
1.1
|
| Cutting
Condition Chart # 4 - 2 & 3 Flute End Mills |
| Suggested
Speeds and Feeds |
| Side
Milling (Fractional) |
|
Work
Material
|
Aluminum
|
Cast Iron
|
Medium
Carbon Steel
Mild Steel
|
Pre-hardened,
Stainless Die,
& Alloy Steels
|
Pre-hardened,
Stainless Die,
& Alloy Steels
|
Hardened
Steels
|
|
Hardness
|
|
|
|
<HRC30
|
HRC30-40
|
HRC40-50
|
|
Depth of
Cut
|
|
|
Ad= 1.5D
Rd=0.1D
|
|
|
Mill
Diameter
(inch)
|
V=330-400
SFM
|
V=100-150 SFM
|
V=100-150 SFM
|
V=80-115 SFM
|
V=80-100 SFM
|
V=50 SFM
|
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
Speed
|
Feed
|
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
RPM
|
IPM
|
|
.015
|
100000
|
15.7
|
31500
|
3.9
|
30000
|
2.0
|
25000
|
1.2
|
25000
|
0.6
|
16000
|
0.3
|
|
.020
|
62000
|
17.7
|
22400
|
4.9
|
22000
|
2.4
|
16000
|
1.4
|
16000
|
0.7
|
9500
|
0.4
|
|
.030
|
40000
|
17.7
|
16000
|
4.9
|
14000
|
2.4
|
10000
|
1.4
|
10000
|
0.7
|
6000
|
0.4
|
|
3/64
|
31500
|
17.7
|
14000
|
6.9
|
11000
|
3.3
|
8000
|
2.4
|
8000
|
1.4
|
4800
|
0.6
|
|
1/16
|
21200
|
17.7
|
9500
|
6.9
|
7500
|
3.3
|
5300
|
2.4
|
5400
|
1.4
|
3200
|
0.6
|
|
5/64
|
16000
|
17.7
|
7100
|
9.8
|
5500
|
3.3
|
4000
|
2.4
|
4000
|
1.4
|
2400
|
1.0
|
|
1/8
|
12500
|
17.7
|
4750
|
11.8
|
4500
|
5.9
|
3550
|
4.7
|
3150
|
1.8
|
1600
|
1.0
|
|
5/32
|
9500
|
18.7
|
3550
|
11.8
|
3550
|
6.9
|
2650
|
4.7
|
2360
|
1.8
|
1200
|
1.0
|
|
3/16
|
7500
|
18.7
|
2800
|
11.8
|
2800
|
7.9
|
2120
|
4.9
|
1900
|
1.8
|
950
|
1.0
|
|
1/4
|
6300
|
18.7
|
2360
|
11.8
|
2360
|
7.9
|
1700
|
4.9
|
1600
|
1.8
|
800
|
1.0
|
|
5/16
|
4750
|
19.7
|
1800
|
11.8
|
1800
|
7.9
|
1320
|
4.9
|
1180
|
1.8
|
600
|
1.0
|
|
3/8
|
3750
|
19.7
|
1400
|
12.4
|
1400
|
8.9
|
1060
|
4.9
|
950
|
1.8
|
480
|
1.0
|
|
1/2
|
3150
|
22.0
|
1180
|
12.4
|
1180
|
8.9
|
850
|
4.9
|
800
|
1.8
|
400
|
1.0
|
|
5/8
|
2360
|
22.0
|
900
|
14.8
|
900
|
9.8
|
670
|
5.5
|
600
|
1.8
|
300
|
1.0
|
|
3/4
|
1900
|
22.0
|
710
|
14.8
|
710
|
9.8
|
530
|
5.9
|
475
|
1.8
|
240
|
1.0
|
|
1
|
1500
|
19.7
|
560
|
14.8
|
560
|
9.8
|
425
|
5.5
|
375
|
1.4
|
190
|
0.8
|
