Single End Cobalt High Speed Steel
List 581: Regular Length - Multiple Flute - Center Hole
Side Milling
Hardness
<145 Brinell
<20 HRC
20-30 HRC
30-40 HRC
40-50 HRC
–
Med. Carbon Steels Med. Strength Titanium Alloys Med. Strength Stainless Steels
Heat Resistant High Alloys High Strength Stainless Steels Titanium Alloys
Mild Steels Hard Brass Bronze Cast Iron
High Carbon Steel Titanium Alloys High Strength Stainless Steels
Heat Resistant High Alloys Austenitic Alloys Nickel Base Alloys
Work Material
Aluminum Aluminum Alloys
Cutting Speed
130-165 SFM 105-125 SFM
65-85 SFM
30-50 SFM
16-32 SFM
450-590 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
Speed RPM 16,820 12,615 10,090
Feed in/min
Mill Dia.
3 4 5 6 8
4,770 3,580 2,860 2,385 1,790 1,430 1,190 1,020
8.8
4,000 2,800 2,240 2,000 1,400 1,120
7.5 8.8 9.8
2,425 1,820 1,455 1,210
3.4 4.0 4.5 4.5 5.6 6.5 6.4 6.2 6.0 5.6 5.7 5.1 4.6 4.5 4.3 4.1 3.8 3.6 3.2 3.1 2.9 3.1 2.9
1,295
1.5 1.8 2.1 2.0 2.6 2.8 3.0 3.1 3.0 3.0 3.0 2.7 2.5 2.4 2.3 2.2 2.0 1.9 1.8 1.7 1.6 1.7 1.6
800 630 500 400 315 280 200 180 160 140 140 112 100 100
0.8 0.9 1.0 1.1 1.3 1.4 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.3 1.1 1.1 1.0 1.0 1.4 1.4 1.3
29.4 35.7 39.8 36.8 46.6 49.6 48.9 44.8 41.7 41.7 39.8 38.4 36.8 35.3 34.0 33.2 31.0 29.7 28.6 27.8 24.8 27.8 24.7
11.3 12.6 12.6 15.7 17.8 17.9 16.1 14.8 14.7 14.1 13.6 13.1 12.6 12.1 11.4 10.6
970 775 650 485 390 325 280 240 215 195 175 160 155 150 140 130 120 110 105 100
10.4 12.4 14.0 13.2 12.4 11.8 11.0
8,410 6,300 5,045 4,200 3,600 3,150 2,800 2,520 2,295 2,100 2,020 1,940
910 730 600 520 455 400 365 330 300 290 280 260 240 230 210 200 180 160 145
10 12 14 16 18 20 22 24 25 26 28 30 32 35 36 40 45 50
900 800 710 630 560 500 450 450 450 400 400 355 315 315 280 250 224
895 795 715 650 600 575 550 510 480 450 410 400 360 320 285
9.8 8.8 7.9 7.9 7.9 7.1 7.1 6.3 5.5 5.5 4.9 5.5 4.9
90 80 71 71 63 63 56 56 50
180
1,680 1,575 1,440 1,400 1,260 1,120 1,010
9.6 9.4 9.2 8.9 9.3 8.4
85 80
osgtool.com
1418
End Mill Technical
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