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Premium EDM Machining Services

DEK is a leading provider of Electrical Discharge Machining (EDM) services, and we specialize in EDM technology to reliably, timely, and cost-effectively manufacture your precision, small, and complex parts.

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Top Quality EDM Machining Services


DEK specializes in precision wire EDM, providing high-precision, high-accuracy, complex parts machining services. Our sinker EDM, wire cut EDM and small hole EDM services are ideal for machining tight tolerances, small inner radius, complex shapes and extremely hard conductive materials that are difficult to machine.

With state-of-the-art equipment and machinists with excellent programming skills, we can achieve tight tolerances of 0.0025mm without leaving burrs or tool marks on the workpiece surface, faster turnaround and higher surface finish.

DEK's EDM services are ideal for commonly used parts in molds, medical, aerospace, defense, automotive, and electronic applications. For example: mold cores, threaded guides, micro-mechanical parts, aircraft engine components, etc. Our EDM services can also be combined with other machining services such as turning, milling, grinding, finishing, heat treatment, surface coating and assembly to provide a complete end-to-end solution. Let's start a new project today!

  • Get an online quote in less than 6 hours
  • Tight tolerances of +/- 0.0001" (0.0025mm) are achievable
  • Sinker EDM, Wire EDM and Small Hole EDM
  • EDM parts' quality have accredited by more than 52 mold manufacturers
  • Machining Diameter from 0.5 to 42mm
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EDM Machining Metals

Choose from a wide range of materials for precise EDM machining solutions at DEK.

Alloy Steel

Mild Steel
Stainless Steel
Tool Steel
Tungsten Steel

Aluminum is a lightweight, highly thermally conductive,highly electrical conductivity, corrosion resistance and popular metal for EDM machining.

At DEK, we specialize in machining all types of aluminum, including 6061, 7075, and 2024, you can get high precision parts such as engine parts, radiators, engine cases and more for electronics, automotive and aerospace.


AL6061, AL6063, AL5083, AL5052, etc.


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Alloy Steel

Alloy steel is an alloy of iron (Fe) and other elements ( including carbon, chromium, nickel, and molybdenum) and is a common metal in EDM machining. It is widely used in automotive, aerospace, and tool making due to its high strength, hardness, wear and corrosion resistance.

At DEK, we specialize in machining all types of alloy steels, including 4130 and 4340.You can get high precision parts such as: bearings, gears, transmission parts and more.


Alloy Steel 1215, 4130,4140,4340,8620,A514 etc.

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Brass is mainly composed of copper and zinc and has a yellow metallic appearance. It is widely used in electronics and construction because of its excellent workability, good electrical, thermal conductivity, corrosion resistance and excellent mechanical.

At DEK, we specialize in machining all types of brass, you can get high-precision parts such as bearings, housings, gears and more.


Brass 260, C360, Cz121,etc

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Bronze is a copper-tin alloy with excellent corrosion resistance, electrical conductivityand castability.

At DEK, we specialize in machining all types of bronze, including 544 and 841, and our high-precision service ensures high-quality parts for industries such as manufacturing and construction, perfect for bearings, gears, handrails, connectors, sockets, and more.


Bronze 544, 841, 932,954, etc.


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Copper is an extremely electrically conductive metal that is widely used in electronics and automotive due to its excellent thermal conductivity, ease of processing and corrosion resistance.

At DEK, we specialize in machining all types of copper, including 101 and 110, you can get high precision parts such as: electrical connectors, housings, gears and more.


Copper C101, C110, etc.

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Inconel is a nickel-based alloy composed of nickel, chromium and iron, and is commonly used as a work material or electrode material in EDM processing, with excellent high-temperature strength, corrosion resistance and oxidation resistance.

At DEK, you can get high precision parts such as turbine blades, heat exchangers, pipe fittings and more for aerospace and chemical.


Inconel 718, 625,600, etc.

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Mild Steel

Mild steel has a carbon content of between 0.05% and 0.25%,is a commonly used material for swiss cnc turning. Due to its low carbon content, it has outstanding workability and plasticity. In addition, it has good weldability and moderate mechanical properties.

At DEK, we specialize in machining all types of mild steel, including 1018 and 1215, and you can get high-quality parts such as: housings, shafts, bearings and more for construction and automotive.


Mild Steel 1018, 1045, A36, 1215, etc.

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Stainless Steel

Stainless steel is an excellent material choice for EDM machining.Because it has good mechanical, corrosion resistance and high temperature resistance

At DEK, we specialize in machining all types of stainless steel, including 304 and  316,you can get  top-quality parts for industries such as automotive, manufacturing and chemical, perfect for molds,bearings, bushings, valves, flanges, fittings and more.


Stainless Steel 301, 303, 304, 304L, 316, 316L, etc.

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Titanium is a lightweight, high-strength metallic material that is popular in EDM machining. It has high temperature resistance, excellent corrosion resistance and biocompatibility.

At DEK, we specialize in machining all types of titanium, including Grade 2 and Grade 5.You can get high quality parts such as: engine parts, engine block, artificial joint and more for aerospace and medical.


Titanium Grade 1, Grade 2, Grade 5, etc.

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titanium -part-cnc-machining
Tool Steel

Tool steel is mainly composed of carbon, chromium, molybdenum, cobalt and other metal elements, is a high-quality high-alloy steel, with good hardness, wear resistance and heat treatment properties.

At DEK, we specialize in machining all types of tungsten steel, you can get high precision parts such as turbine shafts, bearings, gears, pins, bushings and more for aerospace and machinery manufacturing.


Tool Steel A2, A3, D2,S7, etc.

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Tungsten Steel

Tungsten steel is an alloy composed of elements such as tungsten, cobalt and carbon, with high hardness, high wear resistance, good electrical conductivity and corrosion resistance, it is a commonly used electrode material for EMD.

At DEK, we specialize in machining all types of tungsten steel, you can get high precision parts such as bearings, seals, injection molds, valves and more for mold making, automotive and aerospace.


Tungsten Steel YG6, YG8, YG15, YL50, etc.

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surface finishing

One-stop Surface Finishing

Experience excellence with our surface finishing options for EDM machining. We offer a variety of techniques to enhance the appearance and performance of your precision components.
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Precision Machining Tolerance Table

Category Metal Plastic
Linear Dimensions +0.01mm 10.05mm
Diameter +0.002mm +0.02mm
Precise Hole +0.002mm +0.02mm
Chamfer Heights +0.02mm +0.05mm
Angular Dimensions +0°5 +19
Straightness +0.002mm +0.02mm
Flatness +0.002mm +0.01mm
Perpendicularity +0.002mm +0.01mm
Symmetry +0.002mm +0.01mm
Concentricity +0.002mm +0.01mm
Parallelism +0.002mm +0.01mm
Tolerances listed here are minimums for an ideal case. Looser tolerances may be required depending on process, material choice, or part geometry.
If you have no detailed requirements for product tolerance, we can follow the following general ISO2768 tolerance table.

Instant & Accurate Quotes

We will thoroughly review each drawing and provide accurate quotes.

We don't use online automated quotation tools, because it is very inaccurate. Online quote platforms rely solely on calculations based on cutting amounts and fixed coefficients, they fail to account for actual processing nuances, such as material deformation after heat treatment, tight tolerance requirements, grinding after heat treatment, etc. Consequently, automated price calculations can lead to inaccuracies, ultimately increasing your costs.

But you can rest assured at DEK!

Our quotations are both cost-effective and accurate because we have a team of professional mechanical engineers who meticulously review each drawing. These engineers boast over 10 years of experience and possess deep expertise in programming, machine operation, post-processing, material properties, and more. Ensure you will get accurate quotes within 6 hours.

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Production Capacity Guarantee

With perfect production and quality process, you can place your order with confidence.

Advanced CNC Machine Shop

DEK has a series of advanced EDM machining equipment, including wire cutting machines, EDM forming machines, EDM small hole machining machines and CNC EDM machines.

These modern machines are not only capable of efficiently processing all kinds of complex shapes and high-precision requirements, but also ensure that each part meets the tight tolerances and surface finish standards to satisfy customers' needs for high-quality products.

Quality Control

We follow a strict quality inspection process, including IQPC, QE, OQC, and use CMM, height gauge, projector, caliper, hardness tester, spectrometer instruments for high-precision dimensional and hardness inspections.

In addition, our quality staff conducts a thorough cosmetic inspection using surface roughness meters and microscopes to ensure that there are no scratches or burrs. Each part is rigorously inspected at any stage of production to ensure that the final product fully meets your specifications and quality requirements.

Professional Packaging

We package our products with rust-proof paper, plastic bags and foam according to the size and characteristics of the parts. After sealing with tape, we label each package so that you can quickly identify the contents of the goods.

After the initial packaging is completed, we will put it in a 5-layer corrugated box or wooden box, and fix it with pearl cotton or fill it with bubble film to prevent damage caused by transportation. We will also attach a packing list to the outer box, which can not only effectively protect your EDM parts, but also facilitate your inspection and confirmation of the goods.

Global Shipping

We have rich experience in global transportation and cooperate with many international transportation or express companies, and are committed to providing you with the most convenient and economical logistics services.

We will provide personalized transportation solutions according to your order:
  • For small quantities of products, you can choose DHL, FedEx, UPS and other international express or air transportation to ensure fast delivery;
  • For products with larger volume and weight, we will suggest you to use sea or truck transportation to save cost.
  • No matter which mode of transportation you choose, we will do our best to make sure your products arrive at the destination safely and quickly.

    Our Advantages

    2300+ Engineers Love Work With Us


    Our Ordering Process

    Different from the Internet quote platforms, we produce and complete all the details of your parts in our own factory. Each step is professional and reliable, ensuring you can rest assured.
    Send RFQ

    Send RFQ with 2D/3D drawings and detailed requirements via Email or online form.

    Review & Quote

    Our Engineer team will review every drawing carefully and provide an accurate quote within 6 hours.

    Confirm Order

    Confirm the quote, details and delivery schedule, then sign the contract.


    Arrange production process, start programming and machining.

    Quality Control

    Strict quality control during production and final inspection.

    Packaging & Shipping

    Pack the parts, attach part identification labels, and start shipping.

    Send RFQ 222
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    Confirm Order
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    EDM Machining Services Buying FAQs

    EDM machining is suitable for hardened steels, conductive alloys and materials that have reached the limits of conventional machining, such as tungsten steel, stainless steel, nickel-based alloys, titanium and copper.
    EDM machines come in several types, including wire EDM, sinker (or die-sinking) EDM, and hole drilling EDM. The best choice depends on your specific application needs, such as the material you are working with, the complexity of the parts, and the precision required.
    DEK can provide you with high-precision and high-accuracy parts, which can make your price more competitive in large-volume processing, reduce production time, shorten delivery time, and win higher profits for your project!
    Our EDM machining services cater to various industries, including aerospace, automotive, medical, electronics, tool and die making, and mold manufacturing. We are equipped to serve any industry requiring high-precision components or intricate shapes.
    Consider factors like electrode wear, tolerances, and the desired surface finish when designing for EDM machining, and our team is ready to offer guidance for the best results.
    Yes, we have the capabilities to accommodate both prototype and production runs. Whether you need a single prototype or a large volume of parts, we can meet your requirements efficiently.
    Our turnaround time depends on the complexity and volume of the project. We work closely with our clients to establish realistic delivery schedules, ensuring that projects are completed promptly without compromising on quality. Typically, turnaround times range from days for prototypes to weeks for larger production runs.
    We employ a combination of cutting-edge EDM technology, skilled operators, and stringent quality control processes to ensure precision and accuracy. Our team conducts thorough inspections, utilizes measuring instruments, and adheres to strict quality standards to guarantee that every finished product meets your specifications.
    We do not have strict minimum order requirements. We are flexible and willing to work with clients on projects of all sizes, whether it's a single part or a large production run.
    Yes, we offer expedited services for urgent projects. If you have a time-sensitive project, please contact our team, and we will do our best to accommodate your needs. We understand the importance of meeting tight deadlines and can work with you to ensure your project is delivered promptly.

    Get An Accurate Quote For Your Next Projects

    No matter your project is complicated or simple, no matter is metal or plastic, you will get an accurate quotation within 6 hours.

    Get A Quote Today


    Knowledge of EDM Machining

    What is EDM Machining?

    Electrical Discharge Machining (EDM) is a precision metalworking process that employs electrical sparks to shape and remove material from a workpiece. This method relies on controlled electrical discharges, akin to tiny controlled lightning bolts, to erode metal precisely. It is a highly precise machining technique used for intricate and delicate work.

    EDM machining is accomplished by sending an electrical discharge (a spark) between an electrode and the workpiece, which is submerged in a dielectric fluid to prevent premature spark formation. This spark generates intense heat, melting and vaporizing a minuscule portion of the workpiece. Repeated sparking gradually sculpts the desired shape with remarkable precision, allowing for intricate and complex geometries.

    EDM machining finds widespread use in industries requiring exceptional accuracy, such as aerospace, medical device manufacturing, and tool and die production. Its ability to work with exceptionally hard materials and create intricate features makes it a valuable tool for crafting precision components and molds. EDM machining stands out as a specialized, high-precision manufacturing technique in the realm of modern industry.

    What are the advantages of using EDM Machining?

    EDM machining offers precision, versatility, and minimal heat generation, making it ideal for intricate shapes and hard materials in various industries. Here are the advantages of EDM Machining:

    1. Precision: EDM ensures highly accurate results.
    2. Versatility: It works with various tough materials.
    3. Minimal Heat: Little risk of heat-related distortion.
    4. Non-Contact: Suitable for delicate workpieces.
    5. Complex Geometries: Creates intricate shapes with ease.
    6. Minimal Mechanical Stress: Reduces the risk of damage.
    7. Intricate Detailing: Allows for fine, detailed work.

    When will need EDM Machining?

    EDM machining is essential when precision, intricate shapes, and the machining of hard materials are critical in manufacturing processes. Here are some use cases:

    • Hard Materials: Working with exceptionally hard materials such as titanium or carbide.
    • Intricate Shapes: Creating complex, detailed, or fine features.
    • High Precision: Requiring exceptional accuracy in the final product.
    • Heat Sensitivity: Minimizing heat-related distortion or stress on the material.
    • Delicate Components: Working on fragile or thin-walled parts.
    • Tool and Die Making: Crafting molds, dies, or tooling for manufacturing.
    • Aerospace and Medical: Industries that demand high precision and stringent quality standards.