Surface Finishing Services

Black Oxide Services

We provide black oxide coating, a conversion coating that is utilised on steel, stainless steel, and copper. Black oxide is mainly used for its black, smooth appearance and mild enhancement of corrosion resistance. Impregnation of black oxide with oil can achieve the highest level of corrosion resistance.

About Black Oxide

Our Black Oxide Services provide a reliable and versatile solution to enhance the protection, durability, and aesthetics of your metal parts. With our specialized black oxide coating process, we create a durable and attractive black finish that not only adds a layer of corrosion resistance but also improves the visual appeal of your components.

Surface preparation Colors Applicable materials Cosmetic availability Thickness** Visual appearance
As machined (Ra 3.2μm / Ra 126μin) Steel, Stainless Steel, Copper Steel, Stainless Steel, Copper No 0-30μm / 0-1181μin Smooth black matte

Why Choose Our Black Oxide Services?

  1. Superior Corrosion Resistance: The black oxide coating forms a protective barrier on the surface of your metal parts, significantly increasing their resistance to corrosion, rust, and wear. This ensures the longevity and reliability of your components, even in harsh environments.
  2. Enhanced Appearance: The black oxide finish adds a sleek and professional look to your parts. It provides a uniform black coloration that enhances the visual appeal and gives your components a high-end and finished appearance.
  3. Versatile Applications: Our black oxide services are suitable for a wide range of metals, including steel, stainless steel, aluminum, and more. Whether you need black oxide coatings for industrial, automotive, or decorative purposes, we can accommodate your specific requirements.
  4. Improved Lubricity: The black oxide coating contributes to improved lubricity and anti-galling properties, reducing friction and wear between moving parts. This can enhance the performance and efficiency of your components, particularly in applications that involve sliding or rotating mechanisms.
  5. Customization Options: We understand the importance of customization. Our team can work with you to achieve the desired level of black oxide finish, whether it's a matte or glossy appearance. We can also provide additional post-treatments, such as oil or wax coatings, for further protection and customization.
  6. Quality Assurance: We are committed to delivering high-quality results. Our black oxide services undergo strict quality control measures to ensure that each part meets the highest standards of durability, consistency, and appearance. Your satisfaction is our priority.
  7. Timely and Reliable Service: We understand the importance of timely delivery. Our efficient production processes and dedicated team ensure that your projects are completed within the agreed-upon timeframe without compromising on quality or attention to detail.

Example of a black oxide part

Design considerations for black oxide

When considering black oxide as a design option, it's important to keep the following factors in mind:

  1. Material Compatibility: Black oxide is typically applied to ferrous metals such as steel, stainless steel, and cast iron. Ensure that the material you choose is compatible with the black oxide process to achieve the desired results.
  2. Surface Preparation: Proper surface preparation is crucial for a successful black oxide coating. The surface should be clean, free from oils, grease, rust, and scale. Consider the necessary pre-treatment steps, such as degreasing and surface conditioning, to ensure optimal adhesion and uniform coating.
  3. Desired Finish and Appearance: Black oxide coatings can range from matte to glossy finishes. Consider the desired appearance and communicate your preferences to the service provider. Additionally, black oxide can be combined with other post-treatments like oil or wax coatings to further enhance the appearance and provide additional protection.
  4. Functional Requirements: Evaluate the functional requirements of your parts. Black oxide coatings offer enhanced corrosion resistance and friction reduction properties. Determine if these attributes align with your specific application needs and consider any additional functional requirements, such as lubricity or wear resistance.
  5. Dimensional Considerations: Black oxide coatings add a thin layer to the surface of the part. Take into account the coating thickness and ensure that it does not affect the critical dimensions or tolerances of the component. Discuss the coating thickness requirements with the service provider to ensure dimensional integrity.
  6. Masking and Plugging: If there are specific areas of the part that should remain uncoated, consider the need for masking or plugging those areas before the black oxide process. This can help maintain functional surfaces or prevent unwanted coating buildup.
  7. Post-Treatment and Handling: Black oxide coatings require proper handling and care to maintain their appearance and performance. Consider the need for additional post-treatment steps, such as applying protective coatings or implementing suitable packaging and storage solutions to prevent scratching or damage during transportation and storage.
  8. Regulatory and Environmental Considerations: Ensure compliance with any regulatory requirements related to the use of black oxide coatings, such as environmental regulations or restrictions on certain substances. Choose service providers that follow environmentally friendly practices and use eco-friendly chemicals.

By considering these design considerations, you can optimize the integration of black oxide coatings into your component design, ensuring both functional performance and aesthetic appeal.

The V1 black oxide process

Black oxide is a conversion coating, compatible with steel, stainless steel and copper, that provides a black appearance and mildly improves resistance to corrosion of parts.

Here’s how to apply black oxide:

  • First run parts through machining and deburring.
  • Clean parts using alkaline solutions.
  • Rinse in water.
  • Black oxidizing. Immerse the part in the hot (135-145ºC) alkaline bath for a period of 5 to 40 minutes depending on the size of the part
  • Rinse in water.
  • After-finish treatment. Seal the oxide surface with oil, lacquer or wax. This imparts the desired aesthetic appearance and improves the corrosion resistance of the component.
1700124941 black oxide process jpg webp

Experience the Benefits of Black Oxide Coating

Enhance the protection and appearance of your metal parts with our professional black oxide services. Contact us today to discuss your project requirements and discover how our black oxide coatings can elevate the performance and aesthetics of your components.

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