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Wire EDM Machining Services

Wire EDM Machining Services

Our high-precision EDM wire cutting services deliver micron-level accuracy for the most demanding applications. Equipped with state-of-the-art Sodick machines, we specialize in complex geometries, tight tolerances, and superior surface finishes.

✔ Advanced Technology – Imported Sodick CNC EDM systems ensure repeatable ±0.002mm precision
✔ Complex Geometries – Expertly handle multi-axis contours, sharp corners, and thin-walled features
✔ Material Versatility – From hardened tool steels to exotic alloys, we cut it all
✔ Surface Finish Excellence – Achieve mirror-like finishes down to Ra 0.2μm

EDM Material Guide


Material Category Specific Materials Conductivity Machining Advantages Typical Applications
Tool Steels H13, SKD11, D2 Excellent Direct machining of hardened state (HRC60+) Mold inserts (plastic/die casting)
Carbides YG8, YT15 (Tungsten-Cobalt) Excellent No edge chipping, ±0.005mm accuracy Cutting tools/wear parts
Stainless Steels 304, 316L, 17-4PH Excellent Mirror finish (Ra≤0.2μm) Medical implants/gears
Titanium Alloys TC4 (GR5), TA2 Good Avoids α-phase embrittlement Aerospace fasteners/implants
Superalloys Inconel 718, Hastelloy X Moderate Solves work hardening challenges Turbine blades/combustors
Aluminum Alloys 6061, 7075 Excellent No deformation in thin-wall parts Optical mounts/heat sinks
Copper/Alloys Pure Copper, BeCu (C17200) Outstanding Ultra-fine contour machining Electrodes/RF connectors
Refractory Metals Molybdenum (Mo), Tungsten (W) Good Micro-hole drilling (≥0.05mm) Semiconductor fixtures/nozzles
Metal Matrix Composites AlSiC Moderate Isotropic machining Electronic substrates
Sintered Metals PM parts (Fe-Cu system) Moderate Final precision finishing Self-lubricating bearings
Conductive Ceramics Doped ZrO₂ (e.g., ZrO₂+Ni) Weak Special parameter processing Medical probe tips

Gallery of EDM Machining parts

Below are a small selection of the CNC machined parts and end-use components we produce for our customers.

EDM machining tolerances

We follow ISO 2768 standards for CNC machining.


Limits for nominal size

Plastics (ISO 2768- m)

Metals (ISO 2768- f)
0.5mm* to 3mm ±0.1mm ±0.05mm
Over 3mm to 6mm ±0.1mm ±0.05mm
Over 6mm to 30mm ±0.2mm ±0.1mm
Over 30mm to 120mm ±0.3mm ±0.15mm
Over 120mm to 400mm ±0.5mm ±0.2mm
Over 400mm to 1000mm ±0.8mm ±0.3mm
Over 1000mm to 2000mm ±1.2mm ±0.5mm
Over 2000mm to 4000mm ±2mm
*Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing.

EDM processing

Non-Reversible Material Effects in EDM (Key Difference from CNC Machining)


Feature Technical Advantage Geometric Tolerance Relevance
Non-contact machining Zero mechanical cutting force, eliminating material deformation Maintains ±0.005mm tolerance even for thin walls (<0.1mm)
Hardness-independent Processes hardened steels (HRC 60+), carbides, and other difficult-to-machine materials Post-heat treatment machining avoids secondary distortion
Micro-feature capability Achieves ultra-fine features (e.g., 0.02mm micro-holes/slots, fuel injector nozzles) IT5-grade precision for gear/mold profiles (e.g., involute curves)
Omnidirectional cutting Multi-axis tilting (e.g., 5-axis) enables deep cavities/undercuts ≤0.01mm positional accuracy for complex surfaces

EDM's Precision Edge Over Laser Cutting

Heat-Affected Zone (HAZ)
Minimum Internal Corner Accuracy

EDM achieves R0.03mm vs Laser R0.1mm

Perpendicularity Control
Perpendicularity Control

EDM 0.005mm/100mm vs Laser 0.02mm/100mm

Heat-Affected Zone (HAZ)
Heat-Affected Zone (HAZ)

EDM: None vs Laser: 20-50μm hardened layer

Production Workshop

Our team possesses extensive knowledge and experience in the field, ensuring precision and quality in every project we undertake.

Comprehensive workshop
Comprehensive workshop
3D printing room
3D printing room
Surface finishing workshop
Surface finishing workshop
CMM workshop
CMM workshop
Quality Inspection Department
Quality Inspection Department
Assembly workshop
Assembly workshop
Grinding machine center
Grinding machine center
Quotation Engineering Team
Quotation Engineering Team
Certification system
iso13485 iso9001
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What is Sunnyhowe

Sunnyhowe is a leading CNC parts processing factory, which has been serving the high-end manufacturing industry for over 25 years. We are committed to providing precise, efficient, and customized precision parts solutions for high-end manufacturing.

More about Sunnyhowe

FAQs

  • Is CNC milling expensive?

    There are ways you can reduce the cost of CNC milling. If you design simple parts and utilize standard-sized tooling, you can increase the chances of successfully producing a component with minimal costs. Other CNC machining design tips include adding internal corner radii to the parts, avoiding thin walls and sections of a part and opting for bigger features instead of smaller ones.

  • What are common uses for CNC milling?

    CNC milling is one of the most accurate manufacturing techniques which makes it ideal to create complex designs. It can be used to create products such as aerospace components, furniture, medical components, prototypes, titanium pieces, and woodworking.

  • What are some common mills used in manufacturing?

    The most common mills used in manufacturing are CNC lasers, CNC lathes, CNC mills, CNC plasma cutters, and CNC routers. The CNC machine of your choice will depend on your preferred process and the type of product you want to build.

  • What is a CNC milling machine?

    A CNC milling machine is a combination of computer numerical control machining systems and a milling cutter. The milling cutter can cut parts from the workpiece with precision and accuracy to create the final product.

  • What is a CNC milling machine used for?

    CNC milling is used to manufacture products made of glass, metal, plastic, wood and custom-designed components. Machinists can produce prototypes and products for industries such as aerospace, automotive, hardware startups, manufacturing, medical devices, robotics and more.

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