What types of materials are ideal for high-precision EDM machining?

Materials Ideal for High-Precision EDM Machining

Tool Steels

Tool steels are among the most common choices for precision EDM due to their high hardness and thermal stability. Grades such as Tool Steel H13, Tool Steel D2, and Tool Steel 1.2709 maintain dimensional integrity during electrical discharge cycles and allow tolerances down to ±0.002 mm. These steels are ideal for molds, dies, and precision inserts.

Titanium Alloys

Titanium alloys such as Ti-6Al-4V (Grade 5) and medical-grade Ti-6Al-4V ELI (Grade 23) are ideal for EDM machining due to their low thermal conductivity and high strength-to-weight ratio. EDM allows precise detailing without introducing mechanical stress, making it suitable for medical implants, aerospace fasteners, and structural parts.

Nickel-Based Superalloys

Materials like Inconel 718, Hastelloy X, and Haynes 230 are extensively used in aerospace and energy sectors. These alloys are difficult to machine conventionally but respond well to EDM, achieving mirror finishes and sub-10-micron accuracy for parts like turbine blades, heat shields, and combustion components.

Stainless Steels

Stainless grades such as SUS316L, SUS630/17-4 PH, and SUS304 are ideal for corrosion-resistant applications requiring tight tolerances and smooth surfaces. EDM machining ensures sharp features in surgical tools, dental instruments, and industrial nozzles.

Copper and Copper Alloys

Pure Copper C101, Copper C110, and high-performance CuCr1Zr are ideal for high-precision EDM electrode fabrication, as well as electrical connectors and thermal management parts. Their excellent conductivity supports precise spark generation and material removal.

Recommended Post-Processing Services for Precision Parts

To ensure optimal functionality and dimensional stability for EDM-machined parts, we offer:

• Heat Treatment Enhances hardness and mechanical properties, crucial for tooling and aerospace applications.

• Electropolishing Improves surface finish and biocompatibility, especially for medical-grade stainless steel and titanium.

• CNC Machining Enables dimensional refinement and hybrid workflows for parts with mixed tolerance and surface requirements.

By combining these services with our EDM expertise, Neway 3DP delivers precision components tailored to the most demanding industries.