Single End Cobalt High Speed Steel
List 531: Single End - Regular Length - 3 Flute List 532: Double End - Regular Length - 3 Flute List 536: Single End - Long Length - 3 Flute
Side Milling
Hardness
<145 Brinell Mild Steels Hard Brass Bronze Cast Iron
<20 HRC
20-30 HRC
30-40 HRC
–
High Alloys Titanium Alloys High Strength Stainless Steels
Med. Carbon Steels Hard Brass and Bronze Mild Steel Forgings
High Carbon Steel Unalloyed Titanium Ferritic Low Alloys
Work Material
Aluminum Aluminum Alloys
Cutting Speed
155 SFM
115 SFM
70 SFM
40 SFM
395 SFM
a a=1.5D a r= 0.2D
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 12,076
Feed in/min
Mill Dia.
1/8
4,700 3,200 2,350 1,896 1,580 1,185
5.7 9.1 8.3
3,516 2,344 1,758 1,406 1,172
4.1 6.0 5.4 7.0 8.3 6.9 6.9 6.0 4.6 3.7 3.1
2,140 1,427 1,070
2.0 3.1 2.7 3.6 3.9 3.7 3.7 3.6 2.9 2.2 1.9
1,223
0.9 1.4 1.2 1.8 2.0 1.9 2.1 2.1 1.6 1.3 1.1
13.4 20.1 16.9 25.2 25.2 21.4 21.4 19.8 17.9 15.1 13.2
3/16
815 611 489 408 306 245 204 153 122 102
8,051 6,038 4,831 4,025 3,019 2,415 2,013 1,510 1,208 1,006
1/4
5/16
11.0 12.9 11.6 10.4 10.4
856 713 535 428 357 268 214 178
3/8 1/2 5/8 3/4
879 703 586 439 352 293
948 790 592 474 395
1
8.4 6.6 6.1
1-1/4 1-1/2
When using List Number 536, reduce speeds and feeds by 10%.
Slotting
Hardness
<145 Brinell Mild Steels Brass Bronze Cast Iron
<20 HRC
20-30 HRC
30-40 HRC
–
High Alloys Titanium Alloys High Strength Stainless Steels
Med. Carbon Steels Hard Brass and Bronze Mild Steel Forgings
High Carbon Steel Unalloyed Titanium Ferritic Low Alloys
Work Material
Aluminum Aluminum Alloys
Cutting Speed
115-150 SFM
90-110 SFM
50-65 SFM
15-35 SFM
325-375 SFM
Depth of Cut
a a=1/3D
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM
Feed in/min
Speed RPM 10,700
Feed in/min
Mill Dia.
1/8
4,050 2,700 2,025 1,620 1,350 1,010
4.9 7.7 7.1 9.4
3,055 2,040 1,530 1,220 1,020
3.6 5.3 4.7 6.1 7.2 6.0 6.0 5.3 4.0 3.2 2.7
1,760 1,170
1.7 2.5 2.2 3.0 3.2 3.0 3.1 2.9 2.4 1.8 1.6
765 500 385 300 255 190 150 130
0.5 0.9 0.8 1.1 1.3 1.2 1.3 1.3 1.0 0.8 0.7
11.8 17.8 15.0 22.4 22.3 18.9 18.9 17.5 15.8 13.4 11.7
3/16
7,130 5,350 4,280 3,565 2,675 2,140 1,780 1,340 1,070
1/4
880 700 585 440 350 295 220 175 145
5/16
3/8 1/2 5/8 3/4
11.0
9.9 8.9 8.9 7.2 5.7 5.2
765 610 510 385 300 255
810 675 500 400 340
1
95 75 65
1-1/4 1-1/2
890
When using List Number 536, reduce speeds and feeds by 10%.
osgtool.com
1417
End Mill Technical
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