Process & Material
Titanium Grade 5 Micro EDM Feasibility Review
Titanium Grade 5 can be machined with Micro EDM when the geometry matches micro holes, micro slots, miniature cavities, fine pins, and sub-millimeter precision details. Titanium Grade 5 is the common Ti-6Al-4V alpha-beta alloy whose annealed or heat-treated state changes strength and residual stress; the supplied condition affects support, discharge energy, finishing, and inspection.
Quick Answer
Micro EDM is suitable for Titanium Grade 5 when the feature is a micro hole, micro slot, miniature cavity, fine pin, or other sub-millimeter detail. The supplied condition must be stated before tolerance and surface requirements are confirmed.
Key Material Decisions
How This Material Behaves
The common Ti-6Al-4V alpha-beta alloy whose annealed or heat-treated state changes strength and residual stress. In Micro EDM, the supplied condition directly changes discharge stability, electrode wear, edge quality, and the finishing plan—especially at micro scale.
Choosing the Right Condition
Choose Micro EDM for micro holes, micro slots, miniature cavities, fine pins, and sub-millimeter precision details. State the exact Titanium Grade 5 condition, then set tolerance, finish, support, and inspection from the controlled feature rather than the whole part.
Risks to Manage
When Micro EDM is used on a sub-millimeter slot, hole, or datum feature in Titanium Grade 5, two effects occur together: fatigue-critical edges and low thermal conductivity require low-energy finish planning, while micron-level electrode wear and debris change the gap while the small section relaxes or rounds at the edge. The combined result is that the feature can drift in size and pitch while also losing the edge geometry that makes it functional. Control it by stage or replace the electrode, use low-energy finishing, control micro-flushing and temperature, and verify the feature with metrology that resolves the remaining tolerance.
How Micro EDM Works on Titanium Grade 5
Micro EDM uses very small electrodes and low-energy discharges to create miniature conductive features without cutting force. On Titanium Grade 5, the supplied condition changes dimensional stability, discharge response, and surface behavior.
Micro EDM Capability Reference
| What you're asking | What you can expect |
|---|---|
| Feature types | micro holes, micro slots, miniature cavities, fine pins, and sub-millimeter precision details |
| Tolerance | ±0.002–0.010 mm |
| Surface finish | Ra 0.1–1.6 μm |
| Feature scale | Sub-millimeter holes, slots, and cavities |
| Primary micro limit | Electrode wear and measurement resolution |
| Main limitation | Loose-tolerance or easily accessible features are rarely economical with Micro EDM. |
Material Condition Reference
| Condition | What to expect | Watch out for | Surface notes |
|---|---|---|---|
| annealed | Use stable support and low-energy finishing. | Thermal surface effects can reduce fatigue resistance. | Specify recast and edge condition on fatigue and medical faces. |
| stress-relieved | Plan around stress relief and thin-wall movement. | Residual stress can distort delicate profiles. | Use trim passes and controlled post-processing on critical faces. |
How This Material Behaves
Titanium Grade 5 does not behave the same in Micro EDM across every supplied condition. In EDM, this means discharge heat stays near the surface, increasing recast, contamination, and microcrack risk on fatigue-loaded features. State the heat-treatment condition, use progressive low-energy passes, and inspect or remove the altered layer on critical faces. At micro scale, material edge behavior and residual stress are the same order as electrode wear, spark gap, flushing, and measurement uncertainty. The process plan must reserve tolerance for all of them.
Surface Integrity and Post-Process
For Titanium Grade 5 in Micro EDM, use low-energy finishing and define whether recast removal, polishing or passivation is required. Assign fine finish, recast, edge, and post-process requirements only to the functional Micro EDM faces that need them.
Titanium Grade 5 Micro EDM Checkpoints
- Confirm that the feature matches micro holes, micro slots, miniature cavities, fine pins, and sub-millimeter precision details.
- State the supplied condition: annealed and stress-relieved.
- Mark the controlled dimensions, functional surfaces, datum scheme, and inspection method.
Typical Parts and Features
- medical components
- aerospace profiles
- lightweight fixtures
- micro holes
- micro slots
- miniature cavities
Limits and Better Alternatives
Main Limit
Loose-tolerance or easily accessible features are rarely economical with Micro EDM. On Titanium Grade 5, fatigue-critical edges and low thermal conductivity require low-energy finish planning; the supplied condition still controls support, finishing, and surface-integrity review.
Consider Another Route When
Use conventional EDM for larger features, precision laser processing for suitable thin geometry, or mechanical micro-drilling where a tool can reach.
Practical Next Step
Send the Titanium Grade 5 drawing with condition, controlled geometry, tolerance, functional surface callouts, quantity, and inspection requirements. If the route is unclear, we will compare Micro EDM with the adjacent EDM or conventional process.
Practical Takeaway
Titanium Grade 5 is compatible with Micro EDM when the feature matches the process access. The supplied condition determines support, finishing, surface control, and inspection.
Additional Project Information
Include application, destination and end-use notes together with the material, quantity and drawing requirements.
Project Details for Technical Review
Include application and end-use notes when they affect material, inspection, documentation, or export review.
- Process: Micro EDM
- Material: Titanium Grade 5
- Drawing or part sketch
- Material grade
- Thickness / part size
- Quantity
- Tolerance and critical dimensions
- Surface finish or inspection requirement
STEP/STP, DXF, DWG, PDF, IGS/IGES or ZIP.
Confidential drawing review. NDA support available on request.
Frequently Asked Questions
Can Titanium Grade 5 be machined with Micro EDM?
Yes, when the feature is a micro hole, micro slot, miniature cavity, fine pin, or other sub-millimeter detail. Titanium Grade 5 is electrically conductive and the final route follows the feature geometry and supplied condition.
What controls Micro EDM on Titanium Grade 5?
The main process controls are electrode wear, feature-to-electrode ratio, micro-flushing, aspect ratio, edge radius, thermal stability, and measurement resolution. The Titanium Grade 5 condition adds dimensional-stability and surface-integrity requirements.
What is the main risk?
When Micro EDM is used on a sub-millimeter slot, hole, or datum feature in Titanium Grade 5, two effects occur together: fatigue-critical edges and low thermal conductivity require low-energy finish planning, while micron-level electrode wear and debris change the gap while the small section relaxes or rounds at the edge. The combined result is that the feature can drift in size and pitch while also losing the edge geometry that makes it functional. Control it by stage or replace the electrode, use low-energy finishing, control micro-flushing and temperature, and verify the feature with metrology that resolves the remaining tolerance.
What should I send for review?
Send the drawing, exact Titanium Grade 5 condition, controlled geometry, tolerance, functional surface requirements, quantity, and inspection expectations. If any item is undecided, send what you have and we will help complete the review.