HY-PRO ® CARB Performance Sub-Micrograin Carbide End Mills
High Speed Light Milling (Metric) List HP421, HP441 (Continued)
Hardness
<20 HRC
20-30 HRC
30-38 HRC
38-45 HRC
45-55 HRC
Hardened Steels Pre-hardened Steels Stainless Steels Inconel Ni Based Alloys
Hardened Steels Pre-hardened Steels Ti Alloys (Solution Treated and Aged)
Alloy Steels Tool Steels Ti Alloys (Annealed)
Work Material
Mild Steels Carbon Steels
Hardened Steels
Cutting Speed
1,310 SFM
1,150 SFM
820 SFM
490 SFM
260 SFM
a a
a r
Dia D<8
a a
a r
Dia D≤8
Depth of Cut
1.5D 0.01D 8≤D<16 1.5D 0.02D 16≤D 1.5D 0.05D
1D 0.01D 8<D 1D 0.02D
Speed RPM 25,000 25,000 25,000 25,000 25,000 21,000 15,500 12,500 10,500
Feed in/min
Speed RPM 25,000 25,000 25,000 25,000 22,250 18,500 13,500 11,000
Feed in/min
Speed RPM 25,000 25,000 25,000 19,900 15,900 13,000
Feed in/min
Speed RPM 25,000 23,850 15,900 11,900
Feed in/min
Speed RPM 25,000 12,700
Feed in/min
Mill Dia.
1 2 3 4 5 6 8
10.9 19.2 46.8 65.6
12.4 24.7 47.2 65.4 83.9 84.6 82.7 82.7 82.7 78.7 76.8 74.8 72.8 66.9 61.0 59.1
12.4 27.2 46.4 53.1 55.1 59.1 57.1 57.1 57.1 53.1 53.1 51.2 51.2 47.2 43.3 41.3
11.2 23.6 26.0 27.2 29.5 31.3 31.3 31.5 31.1 29.1 28.1 27.8 26.2 25.0 22.6 22.0
12.8 14.2 14.2 16.5 17.7 16.5 16.7 16.5 16.1 15.4 14.8 14.8 14.0 12.8 11.6 11.0
8,450 6,350 5,050 4,200 3,150 2,500 2,100 1,800 1,550 1,400 1,250 1,150 1,050 1,000
119.8
9,550 7,950 5,950 4,750 3,950 3,400 2,950 2,650 2,350 2,150 1,950 1,900
96.5 96.5 98.4 96.5 92.5 88.6 88.6 82.7 76.8 70.9 66.9
9,900 7,950 6,600 5,650 4,950 4,400 3,950 3,600 3,300 3,150
10 12 14 16 18 20 22 24 25
9,250 7,950 6,950 6,150 5,550 5,050 4,600 4,450
9,050 7,950 7,050 6,350 5,750 5,300 5,050
Reduce feeds 50% for Series HP421 High Speed Light Milling.
osgtool.com
1397
End Mill Technical
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