Ap Series Ae Ae Diameter (D1) Z5, Z5CR Vc (inch) Fractional Hardness Ae x D1 Ap x D1 (sfm) 1/8 1/4 3/8 1/2 5/8 3/4 1 Profile 555 RPM 16961 8480 5654 4240 3392 2827 2120 CARBON STEELS ≤ 0.5 ≤ 1.5 (444-666) Fz 0.00046 0.0012 0.0023 0.0031 0.0034 0.0037 0.0043 1018, 1040, 1080, 1090, ≤ 275 Bhn Feed (ipm) 39.0 50.9 65.0 65.7 57.7 52.3 45.6 10L50, 1140, 1212, or 440 RPM 13446 6723 4482 3362 2689 2241 1681 Speed & Feed Recommendations 12L15, 1525, 1536 ≤ 28 HRc Slot 1 ≤1 (352-528) Fz 0.00046 0.0012 0.0023 0.0031 0.0034 0.0037 0.0043 P Feed (ipm) 30.9 40.3 51.5 52.1 45.7 41.5 36.1 Profile 315 RPM 9626 4813 3209 2407 1925 1604 1203 ALLOY STEELS ≤ 0.5 ≤ 1.5 (252-378) Fz 0.00034 0.0009 0.0017 0.0023 0.0026 0.0028 0.0032 4140, 4150, 4320, 5120, ≤ 375 Bhn Feed (ipm) 16.4 21.7 27.3 27.7 25.0 22.5 19.3 5150, 8630, 86L20, or 250 RPM 7640 3820 2547 1910 1528 1273 955 50100 ≤ 40 HRc Slot 1 ≤1 (200-300) Fz 0.00034 0.0009 0.0017 0.0023 0.0026 0.0028 0.0032 Feed (ipm) 13.0 17.2 21.6 22.0 19.9 17.8 15.3 Profile 185 RPM 5654 2827 1885 1413 1131 942 707 ≤ 0.5 ≤ 1.5 (148-222) Fz 0.00028 0.0007 0.0014 0.0018 0.0020 0.0022 0.0026 TOOL STEELS ≤ 375 Bhn Feed (ipm) 7.9 9.9 13.2 12.7 11.3 10.4 9.2 H A2, D2, H13, L2, M2, or 145 RPM 4431 2216 1477 1108 886 739 554 P20, S7, T15, W2 ≤ 40 HRc Slot 1 ≤1 (116-174) Fz 0.00028 0.0007 0.0014 0.0018 0.0020 0.0022 0.0026 Feed (ipm) 6.2 7.8 10.3 10.0 8.9 8.1 7.2 Profile 445 RPM 13599 6800 4533 3400 2720 2267 1700 |  CAST IRONS ≤ 0.5 ≤ 1.5 (356-534) Fz 0.00042 0.0011 0.0021 0.0028 0.0031 0.0034 0.0039 Z-Carb HPR  (LOW & MEDIUM ≤ 220 Bhn Feed (ipm) 28.6 37.4 47.6 47.6 42.2 38.5 33.1 ALLOY) or 355 RPM 10849 5424 3616 2712 2170 1808 1356 Gray, Malleable, ≤ 19 HRc Slot Ductile 1 ≤1 (284-426) Fz 0.00042 0.0011 0.0021 0.0028 0.0031 0.0034 0.0039 K Feed (ipm) 22.8 29.8 38.0 38.0 33.6 30.7 26.4 Profile 340 RPM 10390 5195 3463 2598 2078 1732 1299 CAST IRONS ≤ 0.5 ≤ 1.5 (272-408) Fz 0.00031 0.0008 0.0016 0.0021 0.0023 0.0025 0.0029 (HIGH ALLOY) ≤ 260 Bhn Feed (ipm) 16.1 21.8 27.7 27.3 23.9 21.6 18.8 Gray, Malleable, or 270 RPM 8251 4126 2750 2063 1650 1375 1031 Ductile ≤ 26 HRc Slot 1 ≤1 (216-324) Fz 0.00031 0.0008 0.0016 0.0021 0.0023 0.0025 0.0029 Feed (ipm) 12.8 17.3 22.0 21.7 19.0 17.2 15.0 Profile 490 RPM 14974 7487 4991 3744 2995 2496 1872 STAINLESS STEELS ≤ 0.5 ≤ 1.5 (392-588) Fz 0.00034 0.0009 0.0017 0.0023 0.0026 0.0028 0.0032 (FREE MACHINING) ≤ 275 Bhn Feed (ipm) 25.5 33.7 42.4 43.1 38.9 34.9 29.9 303, 416, 420F, 430F, or 390 RPM 11918 5959 3973 2980 2384 1986 1490 440F ≤ 28 HRc Slot 1 ≤1 (312-468) Fz 0.00034 0.0009 0.0017 0.0023 0.0026 0.0028 0.0032 Feed (ipm) 20.3 26.8 33.8 34.3 31.0 27.8 23.8 Profile 340 RPM 10390 5195 3463 2598 2078 1732 1299 ≤ 0.5 ≤ 1.5 (272-408) Fz 0.00027 0.0007 0.0014 0.0018 0.0020 0.0022 0.0025 STAINLESS STEELS ≤ 275 Bhn Feed (ipm) 14.0 18.2 24.2 23.4 20.8 19.0 16.2 M (DIFFICULT) or 270 RPM 8251 4126 2750 2063 1650 1375 1031 304, 304L, 316, 316L ≤ 28 HRc Slot 1 ≤1 (216-324) Fz 0.00027 0.0007 0.0014 0.0018 0.0020 0.0022 0.0025 Feed (ipm) 11.1 14.4 19.3 18.6 16.5 15.1 12.9 Profile 310 RPM 9474 4737 3158 2368 1895 1579 1184 STAINLESS STEELS ≤ 0.5 ≤ 1.5 (248-372) Fz 0.00027 0.0007 0.0014 0.0018 0.0020 0.0022 0.0025 (PH) ≤ 325 Bhn Feed (ipm) 12.8 16.6 22.1 21.3 18.9 17.4 14.8 13-8 PH, 15-5PH, or 250 RPM 7640 3820 2547 1910 1528 1273 955 17-4 PH, CUSTOM 450 ≤ 35 HRc Slot 1 ≤1 (200-300) Fz 0.00027 0.0007 0.0014 0.0018 0.0020 0.0022 0.0025 Feed (ipm) 10.3 13.4 17.8 17.2 15.3 14.0 11.9 continued on next page 12 www.kyocera-sgstool.com