Roughing Cut Cobalt High Speed Steel
List 460: Multiple Flute - Fine Pitch (Continued)
Side Milling
Hardness
ā
<20 HRC
20-30 HRC
30-40 HRC
40-50 HRC
Medium Carbon Steels Mild Steels
Pre-hardened Steels Stainless Steels Die & Alloy Steels
Pre-hardened Steels Stainless Steels Die & Alloy Steels
Work Material Cutting Speed
Hardened Steels
Aluminum
390-460 SFM
130-164 SFM
100 SFM
66 SFM
50 SFM
a a=1.5D a r= 0.1D
Depth of Cut
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Mill Dia.
1/4
6,900 5,200 4,200 3,500 2,600 2,100 1,700
21.7 21.7 23.6 23.6 23.6 23.6 23.6
2,400 1,800 1,400 1,200
10.6 10.6 13.4 14.2 15.7 16.1 13.8
1,600 1,200
6.7 6.7 6.7 7.1 7.1 7.9 7.1
1,060
3.0 3.0 3.0 3.0 3.0 3.0 3.0
800 600 480 400 300 240 190
1.2 1.2 1.2 1.2 1.2 1.2 1.2
5/16
800 640 530 400 320 250
3/8 1/2 5/8 3/4
950 800 600 480 380
900 720 580
1
Slotting
Hardness
<20 HRC
20-30 HRC
30-40 HRC
40-50 HRC
Medium Carbon Steels Mild Steels
Pre-hardened Steels Stainless Steels Die & Alloy Steels
Pre-hardened Steels Stainless Steels Die & Alloy Steels
Work Material Cutting Speed
Hardened Steels
110-140 SFM
85 SFM
56 SFM
43 SFM
a a
Dia
Depth of Cut
a a=0.5D
Dā¤1/2 1.0D 1/2<D 0.5D
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Mill Dia.
1/4
2,040 1,530 1,190 1,020
7.9 7.9 9.1 9.8
1,360 1,020
4.7 4.7 4.7 5.1 5.1 5.5 5.1
900 680 540 450 340 270 210
2.0 2.0 2.0 2.0 2.0 2.0 2.0
680 510 410 340 260 200 160
0.8 0.8 0.8 0.8 0.8 0.8 0.8
5/16
3/8 1/2 5/8 3/4
810 680 510 410 320
760 620 500
10.6 11.0
1
9.4
osgtool.com
1421
End Mill Technical
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