Machining data
17-4 PH Stainless speeds & feeds
Precipitation-hardening stainless — machine in the H1150/annealed condition where you can. Below are RobbJack's tested starting parameters by diameter — then open the calculator to tune them to your exact tool, depth of cut, and spindle.
| Diameter | Recommended tool | Flutes | SFM | RPM | Feed (IPM) | Chip load (in) |
|---|---|---|---|---|---|---|
| 1/8" | XG-400-04 | 4 | 300 | 9,168 | 11 | 0.00030 |
| 3/16" | NS-401-06 | 4 | 300 | 6,112 | 9.8 | 0.00040 |
| 1/4" | SPS-401-08-010 | 4 | 300 | 4,584 | 11 | 0.00060 |
| 3/8" | SPS-401-12-010 | 4 | 300 | 3,056 | 14.7 | 0.00120 |
| 1/2" | SPS-401-16-010 | 4 | 300 | 2,292 | 16.5 | 0.00180 |
| 3/4" | SPS-401-24-010 | 4 | 300 | 1,528 | 12.8 | 0.00210 |
Starting parameters for roughing/profiling with a rigid setup — always verify on your machine, tool, and fixturing. Open the calculator to enter your exact depth of cut, spindle RPM/HP, and coating, and to get finishing values and a printable setup sheet.