FRACTIONAL Straight Flute Accu-Reamer Series Diameter (D1) 200 Vc (inch) Fractional Hardness (sfm) 1/16 1/8 3/16 1/4 5/16 3/8 1/2 ≤ 175 Bhn 150 RPM 9168 4584 3056 2292 1834 1528 1146 or Fr 0.0018 0.0035 0.0053 0.0071 0.0088 0.0106 0.0141 ≤ 7 HRc (120-180) Feed (ipm) 16.5 16.0 16.2 16.3 16.1 16.2 16.2 CARBON STEELS ≤ 300 Bhn 75 RPM 4584 2292 1528 1146 917 764 573 1018, 1040, 1080, 1090, or Fr 0.0016 0.0031 0.0047 0.0062 0.0078 0.0093 0.0124 10L50, 1140, 1212, ≤ 32 HRc (60-90) 12L15, 1525, 1536 Feed (ipm) 7.3 7.1 7.2 7.1 7.2 7.1 7.1 ≤ 425 Bhn 55 RPM 3362 1681 1121 840 672 560 420 or (44-66) Fr 0.0009 0.0019 0.0028 0.0037 0.0046 0.0056 0.0074 ≤ 45 HRc Feed (ipm) 3.0 3.2 3.1 3.1 3.1 3.1 3.1 P ≤ 275 Bhn 115 RPM 7029 3514 2343 1757 1406 1171 879 or (92-138) Fr 0.0015 0.0030 0.0045 0.0060 0.0075 0.0090 0.0120 ≤ 28 HRc Feed (ipm) 10.5 10.5 10.5 10.5 10.5 10.5 10.5 ALLOY STEELS ≤ 375 Bhn 70 RPM 4278 2139 1426 1070 856 713 535 4140, 4150, 4320, 5120, or (56-84) Fr 0.0015 0.0030 0.0045 0.0060 0.0075 0.0090 0.0120 5150, 8630, 86L20, 50100 ≤ 40 HRc Feed (ipm) 6.4 6.4 6.4 6.4 6.4 6.4 6.4 ≤ 450 Bhn 45 RPM 2750 1375 917 688 550 458 344 or (36-54) Fr 0.0009 0.0019 0.0028 0.0037 0.0046 0.0056 0.0074 ≤ 48 HRc Feed (ipm) 2.5 2.6 2.6 2.5 2.5 2.6 2.5 ≤ 250 Bhn 40 RPM 2445 1222 815 611 489 407 306 or (32-48) Fr 0.0010 0.0020 0.0029 0.0039 0.0049 0.0059 0.0078 ≤ 24 HRc Feed (ipm) 2.4 2.4 2.4 2.4 2.4 2.4 2.4 ≤ 375 Bhn 25 RPM 1528 764 509 382 306 255 191 or (20-30) Fr 0.0006 0.0013 0.0019 0.0025 0.0031 0.0038 0.0050 TOOL STEELS ≤ 40 HRc Feed (ipm) 0.9 1.0 1.0 1.0 0.9 1.0 1.0 H A2, D2, H13, L2, M2, 20 RPM 1222 611 407 306 244 204 153 P20, S7, T15, W2 ≤ 475 Bhn or (16-24) Fr 0.0004 0.0008 0.0012 0.0016 0.0019 0.0023 0.0031 ≤ 50 HRc Feed (ipm) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 ≤ 655 Bhn 14 RPM 856 428 285 214 171 143 107 or (11-17) Fr 0.0003 0.0007 0.0011 0.0014 0.0018 0.0021 0.0028 ≤ 60 HRc Feed (ipm) 0.3 0.3 0.3 0.3 0.3 0.3 0.3 ≤ 220 Bhn 125 RPM 7640 3820 2547 1910 1528 1273 955 or (100-150) Fr 0.0020 0.0040 0.0060 0.0081 0.0101 0.0121 0.0161 CAST IRONS ≤ 19 HRc Feed (ipm) 15.3 15.3 15.3 15.5 15.4 15.4 15.4 K Gray, Malleable, Ductile ≤ 330 Bhn 95 RPM 5806 2903 1935 1452 1161 968 726 or (76-114) Fr 0.0020 0.0040 0.0060 0.0081 0.0101 0.0121 0.0161 ≤ 36 HRc Feed (ipm) 11.6 11.6 11.6 11.8 11.7 11.7 11.7 ≤ 250 Bhn 75 RPM 4584 2292 1528 1146 917 764 573 or (60-90) Fr 0.0010 0.0020 0.0029 0.0039 0.0049 0.0059 0.0078 STAINLESS STEELS ≤ 24 HRc Feed (ipm) 4.6 4.6 4.4 4.5 4.5 4.5 4.5 (FREE MACHINING) 55 RPM 3362 1681 1121 840 672 560 420 303, 416, 420F, 430F 440F ≤ 330 Bhn or (44-66) Fr 0.0008 0.0015 0.0023 0.0030 0.0038 0.0045 0.0060 ≤ 36 HRc Feed (ipm) 2.7 2.5 2.6 2.5 2.6 2.5 2.5 M 35 RPM 2139 1070 713 535 428 357 267 ≤ 275 Bhn STAINLESS STEELS or (28-42) Fr 0.0010 0.0020 0.0029 0.0039 0.0049 0.0059 0.0078 (DIFFICULT) ≤ 28 HRc Feed (ipm) 2.1 2.1 2.1 2.1 2.1 2.1 2.1 304, 316, 321, 13-8 PH, 25 RPM 1528 764 509 382 306 255 191 15-5PH, 17-4 PH, ≤ 375 Bhn Custom 450 or Fr 0.0006 0.0013 0.0019 0.0025 0.0031 0.0038 0.0050 ≤ 40 HRc (20-30) Feed (ipm) 0.9 1.0 1.0 1.0 0.9 1.0 1.0 continued on next page 328 DRILLS www.kDyRoIcLeLrSa-sgstool.com