Process & Material
Titanium Grade 23 Wire EDM Feasibility Review
Titanium Grade 23 can be machined with Wire EDM when the geometry matches through profiles, precision slots, punches, inserts, cutouts, narrow webs, and tapered walls. 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
Wire EDM is suitable for Titanium Grade 23 when the wire can pass completely through the workpiece from an edge or a start hole. 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 Wire EDM, the supplied condition changes stress release during the through cut, edge response to trim passes, and the final corrosion or surface-protection route.
Choosing the Right Condition
Choose Wire EDM for through profiles, precision slots, punches, inserts, cutouts, narrow webs, and tapered walls. 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 Wire EDM, Medical or fatigue-critical surfaces require traceable finishing, cleaning and recast control. Between the rough cut and the final skim passes, guide alignment, flushing and residual restraint can produce a top-to-bottom mismatch, with the highest consequence at medical, fatigue and corrosion-critical titanium surfaces. The Titanium Grade 23 feature may therefore show profile error together with contaminated or cracked recast on a fatigue-, medical- or corrosion-critical edge. For Titanium Grade 23, use clean low-energy finishing and specify whether recast removal, polishing or validated cleaning is required. Verify the top and bottom contour after the part is fully released; document geometry, recast, contamination and the named medical, fatigue or corrosion face for Titanium Grade 23.
How Wire EDM Works on Titanium Grade 23
Wire EDM removes Titanium Grade 23 along a continuous through-cut with a moving wire electrode. Wire tension, guide alignment, flushing and trim-pass offset control kerf, taper, verticality and internal corner radius as the profile opens. The route requires a complete wire path from an edge or start hole and does not produce blind cavities.
Wire EDM Capability Reference
| What you're asking | What you can expect |
|---|---|
| Feature types | through profiles, precision slots, punches, inserts, cutouts, narrow webs, and tapered walls |
| Tolerance | ±0.005–0.025 mm |
| Surface finish | Ra 0.2–3.2 μm |
| Wire diameter | 0.10–0.30 mm planning range |
| Minimum internal corner | Approximately wire radius plus spark gap |
| Main limitation | Blind cavities and closed pockets are not wire-cut features. |
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 Wire EDM, Medical or fatigue-critical surfaces require traceable finishing, cleaning and recast control. On thin or fatigue-loaded profiles, stress release and thermally altered edges must be controlled together rather than judged from contour size alone.
Surface Integrity and Post-Process
For Wire EDM on Titanium Grade 23, use low-energy finishing and define whether recast removal, polishing or passivation is required. Separate the rough cut from skim cuts and apply the fine finish only to functional edges. Inspect roughness, edge rounding, recast and corrosion or fatigue requirements after the final pass; include polishing, coating or protection allowance wherever it changes final size.
Titanium Grade 23 Wire EDM Checkpoints
- Confirm that the feature matches through profiles, precision slots, punches, inserts, cutouts, narrow webs, and tapered walls.
- 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
- punches and die inserts
- precision profile gauges
- gear and spline outlines
Limits and Better Alternatives
Main Limit
Blind cavities and closed pockets are not wire-cut features because the wire needs a continuous through path. 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 Sinker EDM for blind cavities, CNC machining for accessible open geometry, or laser cutting when thin-sheet speed matters more than EDM edge quality.
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 Wire EDM with the adjacent EDM or conventional process.
Practical Takeaway
Titanium Grade 23 is compatible with Wire 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: Wire 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 Wire EDM?
Yes, when the wire can pass completely through the workpiece from an edge or a start hole. Titanium Grade 23 is electrically conductive and the final route follows the feature geometry and supplied condition.
What controls Wire EDM on Titanium Grade 23?
The main process controls are wire diameter, kerf compensation, flushing, wire tension, guide alignment, taper control, and trim-pass stability. The Titanium Grade 23 condition adds dimensional-stability and surface-integrity requirements.
What is the main risk?
For Wire EDM, Medical or fatigue-critical surfaces require traceable finishing, cleaning and recast control. Between the rough cut and the final skim passes, guide alignment, flushing and residual restraint can produce a top-to-bottom mismatch, with the highest consequence at medical, fatigue and corrosion-critical titanium surfaces. The Titanium Grade 23 feature may therefore show profile error together with contaminated or cracked recast on a fatigue-, medical- or corrosion-critical edge. For Titanium Grade 23, use clean low-energy finishing and specify whether recast removal, polishing or validated cleaning is required. Verify the top and bottom contour after the part is fully released; 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.