Grade 5 Titanium Turning Parameters
CNC turning parameters for Grade 5 titanium Ti-6Al-4V speeds feeds tooling.
| Property | Value | Unit | Notes |
|---|---|---|---|
| Turning Speed (Rough OD) | 200-300 | SFM | AlTiN-coated carbide CNMG inserts |
| Turning Speed (Finish OD) | 250-350 | SFM | |
| Turning Speed (Boring) | 200-300 | SFM | |
| Feed (Rough OD) | 0.008-0.015 | IPR | |
| Feed (Finish OD) | 0.004-0.008 | IPR | |
| Feed (Boring) | 0.004-0.010 | IPR | |
| Depth of Cut (Rough) | 0.100-0.200 | in | |
| Depth of Cut (Finish) | 0.010-0.050 | in | |
| Tool Edge Life @ 250 SFM | 30-45 | min | AlTiN-coated carbide CNMG inserts |
Turning Parameters
| Operation | Speed (SFM) | Feed (IPR) | DOC (in) |
|---|---|---|---|
| Rough OD | 200-300 | 0.008-0.015 | 0.100-0.200 |
| Finish OD | 250-350 | 0.004-0.008 | 0.010-0.050 |
| Boring | 200-300 | 0.004-0.010 | 0.030-0.100 |
| Threading | 150-200 | per pitch | multiple passes |
Tool Life
At 250 SFM: 30-45 min edge life. Use AlTiN-coated carbide CNMG inserts.
Evidence Basis
Based on machining recommendations from Sandvik Coromant’s titanium machining guide (tooling-maker application data). These are manufacturer-recommended starting points, not guaranteed outcomes — they must be validated per machine, tooling, and setup rigidity.
Engineering Interpretation (titanium.blog)
(titanium.blog) Grade 5 turning parameters run well below steel because titanium’s low thermal conductivity concentrates heat at the cutting edge. The 200-350 SFM band with AlTiN-coated carbide reflects that reality; start at the conservative end, keep the tool engaged, and use high-pressure coolant to manage edge temperature. These are starting recommendations, not absolutes.