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| Speeds and Feeds | ||||||||||
| MATERIAL | BRINELL | DRILLS | REAMERS | TAPS - S.F.M. | ||||||
| S.F.M | POINT | FEED | S.F.M. | FEED | THREADS PER INCH | |||||
| 3-7 1/2 | 8-15 | 16-24 | 25-UP | |||||||
| Aluminum | 99-101 | 200-250 | 118º | M | 150-160 | M | 50 | 100 | 150 | 200 |
| Aluminum bronze | 170-187 | 60 | 118º | M | 40-45 | M | 12 | 25 | 45 | 60 |
| Bakelite | --- | 80 | 60-90º | M | 50-60 | M | 50 | 100 | 150 | 200 |
| Brass | 192-202 | 200-250 | 118º | H | 150-160 | H | 50 | 100 | 150 | 200 |
| Bronze, common | 166-183 | 200-250 | 118º | H | 150-160 | H | 40 | 80 | 100 | 150 |
| Bronze, phosphor, 1/2 hard | 187-202 | 175-180 | 118º | M | 130-140 | M | 25 | 40 | 50 | 80 |
| Bronze, phosphor, soft | 149-163 | 200-250 | 118º | H | 150-160 | H | 40 | 80 | 100 | 150 |
| Cast iron, soft | 126 | 140-150 | 90º | H | 100-110 | H | 30 | 60 | 90 | 140 |
| Cast iron, medium soft | 196 | 80-110 | 118º | M | 50-65 | M | 25 | 40 | 50 | 80 |
| Cast iron, hard | 293-302 | 45-50 | 118º | L | 67-75 | L | 10 | 20 | 30 | 40 |
| Cast iron, chilled* | 402 | 15 | 150º | L | 8-10 | L | 5 | 5 | 10 | 10 |
| Cast steel | 286-302 | 40-50* | 118º | L | 70-75 | L | 20 | 30 | 40 | 50 |
| Celluloid | --- | 100 | 90º | M | 75-80 | M | 50 | 100 | 150 | 200 |
| Copper | 80-85 | 70 | 100º | L | 45-55 | L | 40 | 80 | 100 | 150 |
| Drop forging (steel) | 170-196 | 60 | 118º | M | 40-45 | M | 12 | 25 | 45 | 60 |
| Duralumin | 90-104 | 200 | 118º | M | 150-160 | M | 50 | 100 | 150 | 200 |
| Everdur | 179-207 | 60 | 118º | L | 40-45 | L | 20 | 30 | 40 | 50 |
| Machinery steel | 170-196 | 110 | 118º | H | 67-75 | H | 35 | 50 | 60 | 85 |
| Magnet steel, soft | 241-302 | 35-40 | 118º | M | 20-25 | M | 20 | 40 | 50 | 75 |
| Magnet steel, hard* | 321-512 | 15 | 150º | L | 10 | L | 5 | 10 | 15 | 25 |
| Manganese steel, 7-13* | 187-217 | 15 | 150º | L | 10 | L | 15 | 20 | 25 | 30 |
| Manganese copper, 30 Mn.* | 134 | 15 | 150º | L | 10-12 | L | --- | --- | --- | --- |
| Malleable iron | 112-126 | 85-90 | 118º | H | --- | H | 20 | 30 | 40 | 50 |
| Mild steel, .20-.30C | 170-202 | 110-120 | 118º | H | 75-85 | H | 40 | 55 | 70 | 90 |
| Molybdenum steel | 196-235 | 55 | 125º | M | 35-45 | M | 20 | 30 | 35 | 45 |
| Monel metal | 149-170 | 50 | 118º | M | 35-38 | M | 8 | 10 | 15 | 20 |
| Nickel, pure* | 187-202 | 75 | 118º | L | 40 | L | 25 | 40 | 50 | 80 |
| Nickel steel, 3-1/2% | 196-241 | 60 | 118º | L | 40-45 | L | 8 | 10 | 15 | 20 |
| Rubber, hard | --- | 100 | 60-90º | L | 70-80 | L | 50 | 100 | 150 | 200 |
| Screw stock, C.R. | 170-196 | 110 | 118º | H | 75 | H | 20 | 30 | 40 | 50 |
| Spring steel | 402 | 20 | 150º | L | 12-15 | L | 10 | 10 | 15 | 15 |
| Stainless steel | 146-149 | 50 | 118º | M | 30 | M | 8 | 10 | 15 | 20 |
| Stainless steel, C.R.* | 460-477 | 20 | 118º | L | 15 | L | 8 | 10 | 15 | 20 |
| Steel, .40 to .50C | 170-196 | 80 | 118º | M | 8-10 | M | 20 | 30 | 40 | 50 |
| Tool, S.A.E., and Forging steel | 149 | 75 | 118º | H | 35-40 | H | 25 | 35 | 45 | 55 |
| Tool, S.A.E., and Forging steel | 241 | 50 | 125º | M | 12 | M | 15 | 15 | 25 | 25 |
| Tool, S.A.E., and Forging steel* | 402 | 15 | 150º | L | 10 | L | 8 | 10 | 15 | 20 |
| Zinc alloy | 112-126 | 200-250 | 118º | M | 150-175 | M | 50 | 100 | 150 | 200 |
| Drill Feed Per Revolution in Inches | Reamer Feed | |||||
| REFERENCE SYMBOL | DIAMETER OF DRILL - INCHES | ALL DIAMETERS | ||||
| UNDER 1/8 | 1/8 TO 1/4 | 1/4 TO 1/2 | 1/2 TO 1 | OVER 1" DIAMETER | Use a feed equal to two or three times that recommended for drills. | |
| L - Light | .001 | .002 | .003 | .005 | .006 | |
| M - Medium | .0015 | .003 | .006 | .010 | .012 | |
| H - Heavy | .0025 | .005 | .010 | .020 | .025 | |
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