Wire EDM for Stainless Steel 316
Wire EDM is often preferred over milling for 316 stainless due to the elimination of work-hardening issues. Complex profiles in this difficult-to-machine material become straightforward with EDM.
Recommended Machining Parameters
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.02 mm |
| Surface Finish | Ra 0.2-0.8 μm |
| Cutting Speed | Moderate |
| Feed Rate | Auto-tuned by EDM controller |
| Tooling Recommendations | Brass wire standard. Coated wire for production work. |
Expert Machining Tips
1
EDM bypasses the gummy machining behavior of 316
2
Excellent choice for complex 316 profiles
3
Passivate after EDM to restore corrosion resistance
4
Multiple skim passes for medical-grade finish
Common Parts Made
Complex marine components
Pharmaceutical tooling
Surgical cutting guides
Precision screens and filters
Machining Challenges
- Recast layer affects corrosion resistance — must passivate
- Slower than carbon steel