June 12th, 2012
posted by AutoDrill
CuttingSpeedsTableNo1Chart.pdf
| Suggested Cutting Speeds with High Speed Steel (HSS) Cutting Tools | ||||||
| Table No. 1 | ||||||
| MATERIAL | BRINELL (BHN) | DRILLS S.F.M. | TAPS-S.F.M. THREADS PER INCH | |||
| 3-7 1/2 | 8-15 | 16-24 | 25 UP | |||
| Aluminum | 99-101 | 200-250 | 50 | 100 | 150 | 200 |
| Aluminum Bronze | 170-187 | 60 | 12 | 25 | 45 | 60 |
| Bakelite | – | 80 | 50 | 100 | 150 | 200 |
| Brass | 192-202 | 200-250 | 50 | 100 | 150 | 200 |
| Bronze, Common | 166-183 | 200-250 | 40 | 80 | 100 | 150 |
| Bronze, Phos.; 1/2 Hard | 187-202 | 175-180 | 25 | 40 | 50 | 80 |
| Bronze, Phos.; Soft | 149-163 | 200-250 | 40 | 80 | 100 | 150 |
| Celluloid | – | 100 | 50 | 100 | 150 | 200 |
| Copper | 80-85 | 70 | 40 | 80 | 100 | 150 |
| Copper, Mang.; 30% Min. | 134 | 15 | – | – | – | – |
| Duralumin | 90-104 | 200 | 50 | 100 | 150 | 200 |
| Everdur | 179-207 | 60 | 20 | 30 | 40 | 50 |
| Iron, Cast; Soft | 126 | 140-150 | 30 | 60 | 90 | 140 |
| Iron, Cast; Med. Soft | 196 | 80-110 | 25 | 40 | 50 | 80 |
| Iron, Cast; Hard | 293-302 | 45-50 | 10 | 20 | 30 | 40 |
| Iron, Cast; Chilled | 402 | 15 | 5 | 5 | 10 | 10 |
| Iron Malleable | 112-126 | 85-90 | 20 | 30 | 40 | 50 |
| Monel | 149-170 | 50 | 8 | 10 | 15 | 20 |
| Nickel, Pure | 187-202 | 75 | 25 | 40 | 50 | 80 |
| Nickel Steel; 3 1/2% | 196-241 | 60 | 8 | 10 | 15 | 20 |
| Rubber, Hard | – | 100 | 50 | 100 | 150 | 200 |
| Screw Stock; C.R. | 170-196 | 110 | 20 | 30 | 40 | 50 |
| Steel, Carbon | 175-225 | 70 | 30 | 40 | 50 | 50 |
| Steel, Drop Forged | 170-196 | 60 | 12 | 25 | 45 | 60 |
| Steel, Machinery | 170-196 | 110 | 35 | 50 | 60 | 85 |
| Steel, Magnet; Soft | 241-302 | 35-40 | 20 | 40 | 50 | 75 |
| Steel, Magnet; Hard | 321-512 | 15 | 5 | 10 | 15 | 25 |
| Steel, Mang.; 7-13% | 187-217 | 15 | 15 | 20 | 25 | 30 |
| Steel, Mild; .20-.30C | 170-202 | 110-120 | 40 | 55 | 70 | 90 |
| Steel, Molybdenum | 196-235 | 55 | 20 | 30 | 35 | 45 |
| Steel, Spring | 402 | 20 | 10 | 10 | 15 | 15 |
| Steel, Stainless | 150-225 | 50 | 8 | 10 | 15 | 20 |
| Steel, Stainless | 460-520 | 20 | 8 | 10 | 15 | 20 |
| Steel, .40-.50C | 170-196 | 80 | 20 | 30 | 40 | 50 |
| Steel, Structural; A-36 | 160 | 110 | 40 | 55 | 70 | 90 |
| Steel, Tool; S.A.E. and Forging | 149 | 75 | 25 | 35 | 45 | 55 |
| Steel, Tool; S.A.E. and Forging | 241 | 50 | 15 | 15 | 25 | 25 |
| Steel, Tool; S.A.E. and Forging | 402 | 15 | 8 | 10 | 15 | 20 |
| Zinc, Alloy | 112-126 | 200-250 | 50 | 100 | 150 | 200 |
Note: 1) HSS reaming tools should be at approximately 2/3 of Drill RPM. 2) Carbide tools should be at approximately double above values.
©2019 AutoDrill. All Rights Reserved. Developed & Maintained by Daniel Anthony
