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

ParameterValue
Achievable Tolerances±0.005 mm
Surface FinishRa 0.2-0.8 μm
Cutting SpeedModerate
Feed RateAuto-tuned by EDM controller
Tooling RecommendationsBrass 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

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