Process & Material
Titanium Grade 23 Micro EDM Feasibility Review
Titanium Grade 23 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 23 is an extra-low-interstitial Ti-6Al-4V grade used where toughness, fatigue and medical cleanliness are important; the supplied condition affects support, discharge energy, finishing, and inspection.
Quick Answer
Micro EDM is suitable for Titanium Grade 23 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
An extra-low-interstitial Ti-6Al-4V grade used where toughness, fatigue and medical cleanliness are important. 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 23 condition, then set tolerance, finish, support, and inspection from the controlled feature rather than the whole part.
Risks to Manage
For Micro EDM, Medical or fatigue-critical surfaces require traceable finishing, cleaning and recast control. Electrode wear, debris and spark-gap variation can move size and pitch together during the final sizing of a sub-millimeter slot, hole or datum feature, especially around medical, fatigue and corrosion-critical titanium surfaces. The practical failure in Titanium Grade 23 is feature drift plus edge rounding or recast that cannot be accepted on the named functional surface. For Titanium Grade 23, use clean low-energy finishing and specify whether recast removal, polishing or validated cleaning is required. Use calibrated electrodes and metrology that resolves the actual remaining tolerance; document geometry, recast, contamination and the named medical, fatigue or corrosion face for Titanium Grade 23.
How Micro EDM Works on Titanium Grade 23
Micro EDM uses a very small electrode and low discharge energy to machine miniature features in Titanium Grade 23. Electrode wear, spark-gap stability, micro-flushing, temperature control and measurement resolution consume a significant share of the available tolerance. The local feature size and aspect ratio—not the overall workpiece size—must define the route.
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 23 is extra-low-interstitial Ti-6Al-4V used where toughness and fatigue performance are tightly controlled. In EDM, this means a contaminated or cracked recast layer can negate the benefit of the ELI grade even when roughness is acceptable. Use clean finishing conditions, leave allowance for surface removal where required, and verify fatigue-critical faces by metallography. For Micro EDM, Medical or fatigue-critical surfaces require traceable finishing, cleaning and recast control. On miniature titanium features, low-energy finishing and high-resolution metrology are required because recast and edge rounding consume the same small tolerance.
Surface Integrity and Post-Process
For Micro EDM on Titanium Grade 23, use low-energy finishing and define whether recast removal, polishing or passivation is required. Use low-energy finishing and account for electrode replacement or calibration before final sizing. Specify edge, recast and post-process requirements only on functional microfeatures, and use metrology that can distinguish true size from edge rounding and surface residue.
Titanium Grade 23 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 23, surface integrity and traceable post-processing matter more than a generic titanium finish claim; 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 23 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 23 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 23
- 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 23 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 23 is electrically conductive and the final route follows the feature geometry and supplied condition.
What controls Micro EDM on Titanium Grade 23?
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 23 condition adds dimensional-stability and surface-integrity requirements.
What is the main risk?
For Micro EDM, Medical or fatigue-critical surfaces require traceable finishing, cleaning and recast control. Electrode wear, debris and spark-gap variation can move size and pitch together during the final sizing of a sub-millimeter slot, hole or datum feature, especially around medical, fatigue and corrosion-critical titanium surfaces. The practical failure in Titanium Grade 23 is feature drift plus edge rounding or recast that cannot be accepted on the named functional surface. For Titanium Grade 23, use clean low-energy finishing and specify whether recast removal, polishing or validated cleaning is required. Use calibrated electrodes and metrology that resolves the actual remaining tolerance; document geometry, recast, contamination and the named medical, fatigue or corrosion face for Titanium Grade 23.
What should I send for review?
Send the drawing, exact Titanium Grade 23 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.