HY-PRO ® CARB Performance Sub-Micrograin Carbide End Mills
List HP421BN, HP441BN
Profiling Milling (Fractional)
Hardness
–
<20 HRC
20-30 HRC
30-38 HRC
38-45 HRC
45-55 HRC
55-60 HRC
Hardened Steels Pre-hardened Steels Ti Alloys (Solution Treated and Aged)
Hardened Steels Pre-hardened Steels Stainless Steels Inconel Ni Based Alloys
Alloy Steels Tool Steels Ti Alloys (Annealed)
Work Material
Mild Steels Carbon Steels
Hardened Steels
Hardened Steels
Cast Iron
Cutting Speed
575 SFM
460 SFM
375 SFM
310 SFM
260 SFM
230 SFM
165 SFM
a a=0.1D a r=0.2D
a a=0.05D 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
Feed in/min
Speed RPM 10,000
Feed in/min
Mill Dia.
1/16
25,000 31.3 25,000 30.5 23,000 25.1 19,000 16.9 16,000 11.4 14,000 8.5
5.3 5.7 7.1 7.9 7.9 8.7 9.4 9.4 9.1 8.7 8.7 7.9 6.5
3/32
23,500 42.6 18,800 34.2 15,300 27.4 12,600 18.2 10,600 12.7
9,400 7,000 5,800 4,700 3,450 2,850 2,350 1,950 1,700 1,400 1,200
9.3
6,700 5,200 4,300 3,550 2,550 2,100 1,700 1,450 1,250 1,050
1/8
17,500 45.3 14,000 36.2 11,600 29.5
9,300 7,750 6,300 4,600 3,800 3,100 2,600 2,300 1,850 1,600 1,185
19.3 20.5 20.9 22.8 25.6 24.4 23.2 22.4 22.4 21.7 16.5
8,150 6,750 5,550 4,050 3,350 2,700 2,300 2,000 1,600 1,350 1,000
14.6 16.9 17.3 19.3 20.9 20.5 19.7 18.9 17.7 17.3 13.5
10.6 12.2 13.0 14.2 15.0 15.4 14.6 14.2 12.6 11.8
5/32 3/16
14,050 44.1 11,550 35.8
9,700 7,900 5,800 4,800 3,900 3,300 2,900 2,350 2,000 1,430
29.5 29.9 33.1 36.6 35.0 33.1 31.9 30.3 28.0 21.5
11,750 48.0
9,500 7,000 5,800 4,700 3,950 3,450 2,850 2,400 1,760
39.0 42.9 48.8 45.3 42.1 40.6 39.4 36.6 31.3
1/4
8,750 7,250 5,900 4,950 4,350 3,600 3,000 2,450
53.1 60.6 57.1 53.1 50.4 49.6 46.1 37.6
5/16
3/8
7/16
1/2 5/8 3/4
900 630
1
880
9.6
Increase feeds 40% to 50% for Series HP441BN.
Profiling Milling (Metric)
Hardness
–
<20 HRC
20-30 HRC
30-38 HRC
38-45 HRC
45-55 HRC
55-60 HRC
Hardened Steels Pre-hardened Steels Ti Alloys (Solution Treated and Aged)
Hardened Steels Pre-hardened Steels Stainless Steels Inconel Ni Based Alloys
Alloy Steels Tool Steels Ti Alloys (Annealed)
Work Material
Mild Steels Carbon Steels
Hardened Steels
Hardened Steels
Cast Iron
Cutting Speed
575 SFM
460 SFM
375 SFM
310 SFM
260 SFM
230 SFM
165 SFM
a a=0.1D a r=0.2D
a a=0.05D 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
Feed in/min
Speed RPM
Feed in/min
Mill Dia.
1 25,000 23.5 25,000 23.5 25,000 19.3 25,000 15.7 25,000 12.7 25,000 10.8 16,000 6.2 2 25,000 38.9 22,350 34.9 18,200 28.1 15,050 18.7 12,600 12.8 11,150 9.5 8,000 6.0 3 18,600 46.4 14,900 37.4 12,150 29.9 10,050 20.0 8,400 14.0 7,450 10.5 5,350 6.8 4 14,000 44.5 11,150 34.9 9,100 28.1 7,550 20.5 6,300 16.2 5,600 12.2 4,000 7.5 5 11,200 50.1 8,950 40.7 7,300 29.7 6,000 21.5 5,050 17.0 4,450 13.4 3,200 8.0 6 9,300 52.6 7,450 42.9 6,050 32.4 5,000 23.5 4,200 18.7 3,700 14.5 2,650 8.7 8 7,000 59.2 5,600 47.8 4,550 35.2 3,750 25.5 3,150 20.1 2,800 14.9 2,000 9.3 10 5,600 56.5 4,450 44.7 3,650 34.4 3,000 25.1 2,500 19.8 2,250 15.9 1,600 9.5 12 4,650 52.6 3,700 41.9 3,050 32.9 2,500 23.9 2,100 19.6 1,850 15.0 1,350 9.3 14 4,000 48.6 3,200 40.2 2,600 30.7 2,150 22.3 1,800 17.7 1,600 14.0 1,150 8.5 16 3,500 48.6 2,800 39.0 2,300 29.8 1,900 22.7 1,600 17.6 1,400 12.9 1,000 8.0 18 3,100 46.1 2,500 37.1 2,050 28.1 1,650 22.0 1,400 17.4 1,250 12.1 900 7.8 20 2,800 43.3 2,250 35.0 1,800 25.7 1,500 20.8 1,250 16.2 1,100 11.1 800 7.3 22 2,550 42.1 2,050 32.4 1,650 22.5 1,350 18.9 1,150 15.3 1,000 10.4 750 7.5 25 2,250 36.8 1,800 31.7 1,450 21.3 1,200 17.0 1,000 12.9 900 9.6 650 6.5 Increase feeds 40% to 50% for Series HP441BN.
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1495
End Mill Technical
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