Roughing Cut Cobalt High Speed Steel
List 470: Regular Length - Multiple Flute - Center Hole
Side Milling
Hardness
<20 HRC
20-30 HRC
30-40 HRC
40-50 HRC
–
Medium Tensile Steels (up to 115 x 103 Lb/in2) Mild Steel Forgings Cast Iron Brass and Bronze Copper
High Tensile Steels (145 x 103 ~200 x 103 Lb/in2) Tool Steels Medium Strength Stainless Steels and Titanium Alloys
High Tensile Steels (115 x 103~145 x 103 Lb/in2) Unalloyed Titanium Heat Resistant Ferritic Low Alloys
Heat Resistant High Alloys High Strength Stainless Steels and Titanium Alloys
Aluminum Alloyed Aluminum
Work Material
Plastics Woods
Cutting Speed
80-100 SFM
60-75 SFM
40-55 SFM
26-40 SFM
195-330 SFM
Dia a r 1/2≤D≤1-1/8 1.5D 0.3D 1-1/4≤D≤2 1D 0.3D a a
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
1,320 1,060
2.1 2.4 2.3 3.0 3.4 3.5 3.5 3.4 3.1 3.8 3.4 3.1 2.9
1,000
1.3 1.5 1.5 1.9 2.1 2.3 2.3 2.1 2.0 2.4 2.1 2.0 1.8
750 600 530 375 300 265 212 190 170 150 118 106
0.9 1.0 1.0 1.1 1.4 1.4 1.4 1.4 1.3 1.5 1.4 1.3 1.1
500 400 355 250 200 180 140 125 112 100
0.5 0.5 0.6 0.8 0.8 0.9 0.9 0.8 0.8 1.0 0.9 0.8 0.8
4,000 3,150 2,800 2,000 1,600 1,400 1,120 1,000
8.9 9.9
5/16
800 710 500 400 355 280 250 224 200 160 140 125
3/8 1/2 5/8 3/4 7/8
950 670 600 475 375 335 300 265 212 190 170
10.5 12.4 14.0 14.8 14.8 14.0 13.3 15.8 14.0 13.3 11.8
1
1-1/8 1-1/4 1-1/2 1-3/4
900 800 630 560 500
80 71 63
2
95
osgtool.com
1424
End Mill Technical
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