Process & Material
Titanium Grade 2 Micro EDM Feasibility Review
Titanium Grade 2 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 2 is a commercially pure titanium grade with lower strength and higher ductility than alpha-beta Grade 5; the supplied condition affects support, discharge energy, finishing, and inspection.
Quick Answer
Micro EDM is suitable for Titanium Grade 2 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
A commercially pure titanium grade with lower strength and higher ductility than alpha-beta Grade 5. 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 2 condition, then set tolerance, finish, support, and inspection from the controlled feature rather than the whole part.
Risks to Manage
For Micro EDM, thin sections can move and corrosion or medical surfaces need selective recast removal and cleanliness. When the electrode, spark gap and material structure approach the feature scale, edge rounding and tool wear can be indistinguishable from true dimensional error without suitable metrology; the interaction is most important at medical, fatigue and corrosion-critical titanium surfaces. For Titanium Grade 2, this can produce feature drift plus edge rounding or recast that cannot be accepted on the named functional surface. For Titanium Grade 2, use clean low-energy finishing and specify whether recast removal, polishing or validated cleaning is required. Control electrode replacement, cleaning and measurement as one final-sizing sequence; document geometry, recast, contamination and the named medical, fatigue or corrosion face for Titanium Grade 2.
How Micro EDM Works on Titanium Grade 2
Micro EDM uses a very small electrode and low discharge energy to machine miniature features in Titanium Grade 2. 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 2 is commercially pure, ductile titanium with moderate strength and high corrosion resistance. In EDM, this means thin parts can move easily and fatigue or corrosion faces are sensitive to recast and contamination despite the material's machinability by spark erosion. Use stable support, clean dielectric, low-energy finishing, and remove or limit recast on service-critical surfaces. For Micro EDM, thin sections can move and corrosion or medical surfaces need selective recast removal and cleanliness. 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 2, 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 2 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 2, thin sections can move and corrosion or medical surfaces need selective recast removal and cleanliness; 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 2 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 2 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 2
- 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 2 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 2 is electrically conductive and the final route follows the feature geometry and supplied condition.
What controls Micro EDM on Titanium Grade 2?
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 2 condition adds dimensional-stability and surface-integrity requirements.
What is the main risk?
For Micro EDM, thin sections can move and corrosion or medical surfaces need selective recast removal and cleanliness. When the electrode, spark gap and material structure approach the feature scale, edge rounding and tool wear can be indistinguishable from true dimensional error without suitable metrology; the interaction is most important at medical, fatigue and corrosion-critical titanium surfaces. For Titanium Grade 2, this can produce feature drift plus edge rounding or recast that cannot be accepted on the named functional surface. For Titanium Grade 2, use clean low-energy finishing and specify whether recast removal, polishing or validated cleaning is required. Control electrode replacement, cleaning and measurement as one final-sizing sequence; document geometry, recast, contamination and the named medical, fatigue or corrosion face for Titanium Grade 2.
What should I send for review?
Send the drawing, exact Titanium Grade 2 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.