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.
