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Electroless Nickel Plating

Electroless nickel plating offers a corrosion-resistant coating without the need for electricity to enhance surface smoothness Contact Yicen Machining today for high-performance surface protection.

Electroless Nickel Plating Distinct Features

Description General Tolerance or Standard
Surface Roughness (Ra) 0.2 – 1.0 µm
Compatible Materials Steel, aluminum, copper
Dimensional Tolerance Impact ±0.005 – ±0.015 mm due to coating thickness
Visual Appearance Uniform, metallic coating
Mechanical Properties Enhanced wear and corrosion resistance
Best Applications Aerospace, automotive, electronics
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Electroless Nickel Plating: Uniform, Corrosion-Resistant Finishing by Yicen Machining

Electroless nickel plating (ENP) is a reliable surface finishing solution for demanding applications where consistent coating, corrosion protection, and improved hardness are essential. At Yicen Machining, we apply ENP to parts with complex geometries and tight tolerances ensuring a durable, uniform finish without the use of electricity.

Whether your components operate in aerospace, oil & gas, automotive, or electronics environments, our electroless nickel plating ensures maximum wear resistance, dimensional control, and part longevity.

Yicen’s Electroless Plating Process

  1. Pre-Treatment – The part is cleaned and activated to remove contaminants and oxides.
  2. Immersion Plating – The component is submerged in a heated bath containing nickel salts, a reducing agent, and stabilizers.
  3. Controlled Deposition – The plating forms evenly across all surfaces, including threads and blind holes.
  4. Rinse & Dry – The part is carefully rinsed and dried to complete the process.

Why Choose Electroless Nickel Plating?

Yicen Machining recommends ENP for high-performance parts where precision and protection are essential. Key benefits include:

  • Uniform Coating – Delivers even coverage across complex shapes and recessed features.
  • Superior Corrosion Resistance – Especially with high-phosphorus variants; ideal for marine and chemical environments.
  • Excellent Wear Resistance – Medium- and low-phosphorus coatings offer exceptional abrasion performance.
  • Tight Tolerance Control – Coating thickness is precisely managed to protect critical dimensions.
  • Enhanced Lubricity – Reduces friction in sliding parts, improving functionality.
  • Non-Electrical Application – Suitable for coating non-conductive materials (with pretreatment).
  • Heat Treatable – Hardness can exceed 950 HV (68+ HRC) when post-treated.

Compatible Materials for ENP

Electroless nickel plating works on a variety of substrates, including:

  • Steel and stainless steel
  • Aluminum and aluminum alloys
  • Copper, brass
  • Titanium (with proper surface preparation)
  • Plastics (after metallization)

Yicen Machining ensures material compatibility and selects the right phosphorus content based on your operational requirements.

Why Yicen Machining for Electroless Nickel Plating?

At Yicen Machining, we offer comprehensive ENP services with expert process control, technical support, and fast lead times:

  • High, medium, and low phosphorus options available
  • In-house process monitoring and thickness control
  • Quick turnaround for both low- and high-volume production
  • Full integration with CNC machining and post-processing
  • Compliance with relevant industrial specifications

Extend the Life of Your Parts with Yicen’s ENP Services

Electroless nickel plating provides superior protection and performance across industries. At Yicen Machining, we ensure your parts are finished to the highest standards ready to perform in even the most challenging environments.

Request a quote today and see how our ENP services can elevate the durability and precision of your components.

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Frequently Asked Questions

Electroless Nickel Plating

  • What is the hardness of the coating?

    As-plated, it ranges from 45–60 HRC. After heat treatment, hardness can reach up to 68 HRC, comparable to hard chrome. 

  • Is ENP electrically conductive?

    Yes. It maintains conductivity and is used in electronics for its solderability and corrosion resistance. 

  • Can it coat internal features like holes and threads?

    Absolutely. ENP is known for its uniform coverage, including complex geometries and internal cavities. 

  • Does ENP prevent rust?

    Yes. Especially high-phosphorus ENP offers excellent corrosion resistance, even in marine or chemical exposure. 

  • How thick is an electroless nickel coating?

    Typical coating thickness ranges from 5 to 50 microns (0.0002″ to 0.002″), depending on the protection required. 

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