FRACTIONAL Single End Roughers (Coarse Pitch) Ap Series Diameter (D1) Ae Ae (inch) 61 Vc Fractional Hardness Ae x D1 Ap x D1 (sfm) 1/4 3/8 1/2 3/4 1 500 RPM 7640 5093 3820 2547 1910 Profile ≤ 0.5 ≤ 1.5 Fz 0.0006 0.0011 0.0014 0.0017 0.0020 CARBON STEELS (400-600) 1018, 1040, 1080, ≤ 175 Bhn Feed (ipm) 13.8 16.8 21.4 17.3 19.1 1090, 10L50, 1140, or 1212, 12L15, 1525, ≤ 7 HRc 400 RPM 6112 4075 3056 2037 1528 1536 Slot 1 ≤1 Fz 0.0006 0.0011 0.0014 0.0017 0.0020 (320-480) Feed (ipm) 11.0 13.4 17.1 13.9 15.3 P 365 RPM 5577 3718 2789 1859 1394 Profile ≤ 0.5 ≤ 1.5 Fz 0.0004 0.0008 0.0011 0.0013 0.0015 ALLOY STEELS (292-438) 4140, 4150, 4320, ≤ 275 Bhn Feed (ipm) 6.7 8.9 12.3 9.7 10.5 5120, 5150, 8630, or 86L20, 50100 ≤ 28 HR 295 RPM 4508 3005 2254 1503 1127 Slot 1 ≤1 Fz 0.0004 0.0008 0.0011 0.0013 0.0015 (236-354) Feed (ipm) 5.4 7.2 9.9 7.8 8.5 345 RPM 5272 3514 2636 1757 1318 Profile ≤ 0.5 ≤ 1.5 Fz 0.0006 0.0009 0.0015 0.0018 0.0021 (276-414) TOOL STEELS ≤ 250 Bhn Feed (ipm) 9.5 9.5 15.8 12.7 13.8 H A2, D2, H13, L2, M2, or P20, S7, T15, W2 ≤ 24 HRc 275 RPM 4202 2801 2101 1401 1051 Slot 1 ≤1 Fz 0.0006 0.0009 0.0015 0.0018 0.0021 (220-330) Feed (ipm) 7.6 7.6 12.6 10.1 11.0 365 RPM 5577 3718 2789 1859 1394 Profile ≤ 0.5 ≤ 1.5 Fz 0.0008 0.0015 0.0020 0.0024 0.0028 (292-438) CAST IRONS ≤ 220 Bhn Feed (ipm) 13.4 16.7 22.3 17.8 19.5 K Gray, Malleable, or Ductile ≤ 19 HRc 295 RPM 4508 3005 2254 1503 1127 Slot 1 ≤1 Fz 0.0008 0.0015 0.0020 0.0024 0.0028 (236-354) Feed (ipm) 10.8 13.5 18.0 14.4 15.8 Bhn (Brinell) HRc (Rockwell C) rpm = (Vc x 3.82) / D1 ipm = Fz x number of flutes x rpm reduce speed and feed for materials harder than listed refer to the KYOCERA SGS Tool Wizard® for complete technical information (www.kyocera-sgstool.com) www.kyocerEaN-DsgMstILoLoSl.com END MILLS 203