
| Series 7, 7B | Ae | Ap Ae | Vc | D | iameter ( (inch) | D1) | |||||||
| Fractional | Hardness | Ae x D1 | Ap x D1 | (sfm) | 1/8 | 1/4 | 3/8 | 1/2 | 5/8 | 3/4 | 1 | ||
| CARBON STEELS | ≤ 275 Bhn | Finish | 480 | RPM | 14669 | 7334 | 4890 | 3667 | 2934 | 2445 | 1834 | ||
| 1018, 1040, 1080, 1090, 10L50, 1140, 1212, 12L15, | or ≤ 28 HR | ≤ 0.02 | ≤ 2 | (384-576) | Fz | 0.0004 | 0.0010 | 0.0019 | 0.0025 | 0.0032 | 0.0033 | 0.0035 | |
| P 1525, 1536 | c | Feed (ipm) | 23.5 | 29.3 | 37.2 | 36.7 | 37.6 | 32.3 | 25.7 | ||||
| ALLOY STEELS | ≤ 375 Bhn | Finish | 275 | RPM | 8404 | 4202 | 2801 | 2101 | 1681 | 1401 | 1051 | ||
| 4140, 4150, 4320, 5120, | or | ≤ 0.02 | ≤ 2 | 220330 | Fz | 0.0003 | 0.0007 | 0.0014 | 0.0018 | 0.0023 | 0.0024 | 0.0026 | |
| 5150, 8630, 86L20, 50100 | ≤ 40 HRc | (-) | Feed (ipm) | 10.1 | 11.8 | 15.7 | 15.1 | 15.5 | 13.4 | 10.9 | |||
| Fiih | 230 | RPM | 7029 | 3514 | 2343 | 1757 | 1406 | 1171 | 879 | ||||
| H TOOL STEELS A2, D2, H13, L2, M2, P20 S7 T15 W2 | ≤ 375 Bhn or ≤ 40 HR | ns | ≤ 0.02 | ≤ 2 | (184-276) | Fz | 0.0002 | 0.0006 | 0.0012 | 0.0016 | 0.0020 | 0.0021 | 0.0022 |
| , , , | c | Feed (ipm) | 5.6 | 8.4 | 11.2 | 11.2 | 11.2 | 9.8 | 7.7 | ||||
| CAST IRONS | ≤ 220 Bhn | Finish | 605 | RPM | 18489 | 9244 | 6163 | 4622 | 3698 | 3081 | 2311 | ||
| (LOW & MEDIUM ALLOY) | or | ≤ 0.02 | ≤ 2 | Fz | 0.0006 | 0.0015 | 0.0028 | 0.0037 | 0.0046 | 0.0047 | 0.0051 | ||
| Gray, Malleable, Ductile | ≤ 19 HRc | (484-726) | Feed (ipm) | 44.4 | 55.5 | 69.0 | 68.4 | 68.0 | 57.9 | 47.1 | |||
| K | 465 | RPM | 14210 | 7105 | 4737 | 3553 | 2842 | 2368 | 1776 | ||||
| CAST IRONS (HIGH ALLOY) | ≤ 260 Bhn or | Finish | ≤ 0.02 | ≤ 2 | Fz | 0.0004 | 0.0011 | 0.0021 | 0.0028 | 0.0034 | 0.0036 | 0.0039 | |
| Gray, Malleable, Ductile | ≤ 26 HRc | (372-558) | Feed (ipm) | 22.7 | 31.3 | 39.8 | 39.8 | 38.7 | 34.1 | 27.7 | |||
| STAINLESS STEELS | ≤ 275 Bhn | Finish | 420 | RPM | 12835 | 6418 | 4278 | 3209 | 2567 | 2139 | 1604 | ||
| (FREE MACHINING) | or | ≤ 0.02 | ≤ 2 | Fz | 0.0004 | 0.0010 | 0.0019 | 0.0025 | 0.0032 | 0.0033 | 0.0035 | ||
| 303, 416, 420F, 430F, 440F | ≤ 28 HRc | (336-504) | Feed (ipm) | 20.5 | 25.7 | 32.5 | 32.1 | 32.9 | 28.2 | 22.5 | |||
| STAINLESS STEELS | ≤ 275 Bhn | Finish | 290 | RPM | 8862 | 4431 | 2954 | 2216 | 1772 | 1477 | 1108 | ||
| M (DIFFICULT) | or | ≤ 0.02 | ≤ 2 | 232348 | Fz | 0.0003 | 0.0007 | 0.0014 | 0.0018 | 0.0023 | 0.0024 | 0.0026 | |
| 304, 304L, 316, 316L | ≤ 28 HRc | (-) | Feed (ipm) | 10.6 | 12.4 | 16.5 | 16.0 | 16.3 | 14.2 | 11.5 | |||
| STAINLESS STEELS | ≤ 325 Bhn | Finish | 265 | RPM | 8098 | 4049 | 2699 | 2025 | 1620 | 1350 | 1012 | ||
| (PH) 13-8 PH 15-5 PH | or | ≤ 0.02 | ≤ 2 | Fz | 0.0003 | 0.0007 | 0.0014 | 0.0018 | 0.0023 | 0.0024 | 0.0026 | ||
| , , 17-4 PH, Custom 450 | ≤ 35 HRc | (212-318) | Feed (ipm) | 9.7 | 11.3 | 15.1 | 14.6 | 14.9 | 13.0 | 10.5 | |||
| SUPER ALLOYS (NICKEL COBALT | ≤ 300 Bhn | Finish | 80 | RPM | 2445 | 1222 | 815 | 611 | 489 | 407 | 306 | ||
| , , IRON BASE) | or | ≤ 0.02 | ≤ 2 | Fz | 0.0003 | 0.0007 | 0.0014 | 0.0018 | 0.0023 | 0.0024 | 0.0026 | ||
| Inconel 601, 617, 625, Incoloy, Monel 400 | ≤ 32 HRc | (64-96) | Feed (ipm) | 2.9 | 3.4 | 4.6 | 4.4 | 4.5 | 3.9 | 3.2 | |||
| SUPER ALLOYS (NICKEL COBALT | 65 | RPM | 1986 | 993 | 662 | 497 | 397 | 331 | 248 | ||||
| , , IRON BASE) | ≤ 400 Bhn or | Finish | ≤ 002 | ≤ 2 | Fz | 0.0002 | 0.0006 | 0.0010 | 0.0014 | 0.0017 | 0.0018 | 0.0019 | |
| Inconel 718, X-750, | . | ||||||||||||
| Incoloy, Waspaloy, Hastelloy, Rene | ≤ 43 HRc | (52-78) | Feed (ipm) | 1.6 | 2.4 | 2.6 | 2.8 | 2.7 | 2.4 | 1.9 | |||
| S TITANIUM ALLOYS | ≤ 350 Bhn | Finish | 300 | RPM | 9168 | 4584 | 3056 | 2292 | 1834 | 1528 | 1146 | ||
| Pure Titanium, Ti6Al4V, Ti6Al2Sn4Zr2Mo | or | ≤ 0.02 | ≤ 2 | Fz | 0.0004 | 0.0011 | 0.0021 | 0.0028 | 0.0034 | 0.0036 | 0.0039 | ||
| , Ti4Al4Mo2Sn0.5Si | ≤ 38 HRc | (240-360) | Feed (ipm) | 14.7 | 20.2 | 25.7 | 25.7 | 24.9 | 22.0 | 17.9 | |||
| TITANIUM ALLOYS (DIFFICULT) | ≤ 440 Bh | Finish | 105 | RPM | 3209 | 1604 | 1070 | 802 | 642 | 535 | 401 | ||
| Ti10Al2Fe3Al, Ti5Al5V5Mo3Cr, Ti7Al4Mo, | n or ≤ 47 HRc | ≤ 0.02 | ≤ 2 | (84-126) | Fz | 0.0004 | 0.0011 | 0.0021 | 0.0028 | 0.0034 | 0.0036 | 0.0039 | |
| Ti3Al8V6Cr4Zr4Mo, Ti6Al6V6Sn, Ti15V3 Cr3Sn3Al | Feed (ipm) | 5.1 | 7.1 | 9.0 | 9.0 | 8.7 | 7.7 | 6.3 |
Bhn (Brinell) HRc (Rockwell C) rpm = Vc x 3.82 / D1 ipm = Fz x 4 x rpm