EDM & Wire Machining Services
When Conventional
Cutting Can't Reach.
Electrical discharge machining removes material through controlled electrical sparks rather than cutting forces — making it the only viable process for intricate features in fully hardened tool steels, carbide, and exotic alloys where conventional tooling would deflect, chatter, or simply wear out. Delta's EDM and Wire EDM capability serves aerospace, defense, and industrial OEM programs with the precision and documentation they demand.
Wire EDM produces burr-free, stress-free cuts on complex 2D profiles with sharp internal corners, thin walls, and tight tolerances impossible to achieve through milling. Sinker EDM creates precise 3D cavities, pockets, and blind recesses in hardened workpieces. Both processes operate under our AS9100 Rev D quality management system with full traceability.
Capability Specifications
- Processes
- Wire EDM & Sinker EDM
- Tolerance Capability
- ±0.0002"
- Surface Finish
- To 16 Ra & Better
- Materials
- Hardened Steel · Carbide · Exotic
- Key Advantage
- No Cutting Forces / Burr-Free
- Quality Standard
- AS9100 Rev D
Where EDM is the
Only Viable Answer
EDM is specified when material hardness, feature geometry, or surface integrity requirements rule out conventional machining. Delta's EDM capability supports aerospace, defense, and tooling programs with component families including:
- Hardened tool steel die inserts, punches, and forming tools
- Aerospace turbine component features requiring sharp internal corners and precise profiles
- Defense component slots, keyways, and splines in hardened shafts
- Carbide and ceramic components requiring non-contact material removal
- Thin-wall components where cutting forces would cause distortion or fracture
EDM is frequently used as a secondary operation after CNC milling or CNC turning to add features that cannot be created with rotary cutting tools. Our engineering team will identify the right process sequence during the DFM review on your program.
Explore More
Let's Machine
Your Next Part.
Upload your drawings and specifications. Our engineering team will review and respond with a detailed, competitive quote.