HSS-CO End Mills 4 & 6 Flute Standard 4 Flute and 6 Flute HSS-Co Side Milling
Hardness
<145 Brinell
<20 HRC
20-30 HRC
Medium Tensile Steels Mild Steel Forgings Cast Iron Hard Brass and Bronze Copper
High Tensile Steels Unalloyed Titanium Heat Resistant Ferritic Low Alloys
Mild Steels Brass Bronze
Work Material
Cutting Speed
80-150 SFM
80-110 SFM
16-32 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
Mill Dia.
IPT
IPT
IPT
1/16 5/64 3/32 7/64
7,030 5,625 4,685 4,015 3,515 3,125 2,810 2,555 2,340 1,760 1,400 1,170 1,000
0.00020 0.00028 0.00040 0.00048 0.00056 0.00067 0.00080 0.00095 0.00110 0.00160 0.00224 0.00265 0.00335 0.00375 0.00400 0.00425 0.00475 0.00475 0.00500 0.00530 0.00560 0.00560 0.00560 0.00600 0.00600 0.00630 0.00630 0.00630
5.6 6.3 7.5 7.6 7.9 8.4 9.0 9.7
5,800 4,645 3,870 3,320 2,900 2,580 2,320 2,110 1,935 1,450 1,160
0.00018 0.00025 0.00036 0.00043 0.00050 0.00060 0.00071 0.00085 0.00100 0.00140 0.00200 0.00236 0.00300 0.00315 0.00355 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375 0.00375
4.2 4.6 5.5 5.6 5.8 6.2 6.6 7.2 7.7 8.1 9.3 9.1
1,465 1,175
0.00014 0.00020 0.00028 0.00034 0.00040 0.00048 0.00056 0.00067 0.00080 0.00112 0.00160 0.00190 0.00250 0.00265 0.00300 0.00335 0.00355 0.00355 0.00400 0.00400 0.00400 0.00400 0.00400 0.00400 0.00400 0.00400 0.00400 0.00400
0.8 0.9 1.1 1.1 1.2 1.2 1.3 1.4 1.6 1.6 1.9 1.9 2.1 1.9 2.0 2.0 1.9 1.7 1.8 1.7 1.6 1.5 1.3 1.2 1.1 1.0 1.3 1.1
980 840 735 650 585 530 490 365 295 245 210 185 160 145 135 120 110 105 100
1/8
9/64 5/32
11/64
3/16
10.3 11.2 12.6 12.4 13.5 13.2 12.5 11.9 12.1 11.1 10.8 10.6 10.5
1/4
5/16
3/8
970 830 725 645 580 530 485 445 415 390 365 320 290 265 240 210 180
7/16
10.0
1/2
880 780 700 640 585 540 500 470 440 390 350 320 295 250 220
9.1 9.2 8.7 7.9 7.3 6.7 6.2 5.8 5.4 4.8 4.4 4.0 3.6 4.7 4.1
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
9.8 8.7 8.4 7.7 7.4 9.5 8.3
90 80 75 65 60 50 45
1-1/8 1-1/4 1-3/8 1-1/2 1-3/4
2
1) Speeds and Feeds for Lists 540, 541, 542, 543, 547, 548, 575, and 641 2) Reduce Speeds and Feeds 15-20% for Lists 557 3) Reduce Speeds and Feeds 10-15% for Lists 545, 546, 558 and 646 4) Increase Speeds and Feeds 5-15% for Lists 549
osgtool.com
1410
End Mill Technical
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