Black Anodizing
Black Anodizing
Premium aesthetics and lasting functionality.
A resilient black finish that will not peel.
Key Benefits
- Superior Visual Appeal
- Low Reflectivity
- Enhanced Wear Resistance
- Enhanced Corrosion Resistance
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Kashima Coat Black
Kashima Coat Black retains the proven lubricity and wear resistance of the original Kashima Coat with a deep black finish. In addition to unifying product design, it is the ideal solution for applications requiring confidentiality, as well as optical components where preventing stray light is critical.
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40
Years of Experience
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5,000+
Products Delivered
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15
Registered Patents
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38
Countries Served
Black Anodizing Features
Advanced Optical &
Thermal Performance
- The black film effectively absorbs visible light, significantly reducing stray light (unwanted reflections) in optical devices and sensors.
- High far-infrared emissivity allows the metal to dissipate heat more efficiently than raw aluminum, improving the cooling performance of heat sinks.
- With minimal dimensional change and the ability to control both light and heat, this finish is ideal for high-precision components like camera barrels and inspection equipment components.
A Robust, Non‑Peeling Finish with
a Rich Appearance
- Unlike paint, which sits on the surface, this finish is chemically integrated into the metal. This eliminates the risk of "peeling" or flaking.
- It preserves the natural metallic texture (including hairline or bead-blasted finishes) while adding a deep, matte black color for a professional look.
- Even complex shapes receive a uniform coating, eliminating the "unevenness" often seen with conventional painting.
Rugged Corrosion & Surface
Protection
- Surface hardness is significantly higher than untreated aluminum, protecting the product from scratches and impact during assembly or use.
- The stable oxide layer prevents corrosion (rust) caused by moisture or harsh environments, extending the product’s lifespan.
- The coating acts as an electrical insulator, making it an excellent choice for short-circuit prevention in electronic housings and internal components.
Technical Specifications
| Item | Standard Black Anodizing | Kashima Coat Black |
|---|---|---|
| Recommended Materials | A2000, A5000, A6000, and A7000 series; A380 is also compatible. |
A5052, A6061, A6063, ADC12, etc. |
| Standard Film Thickness
(Recommended Range) |
10 - 20μm | 10 - 30μm |
| Hardness (Min - Max) | 150 - 200 HV | 250 - 450 HV |
| Friction Coefficient | Standard black anodizing has insufficient hardness for sliding applications; this metric is therefore not applicable. |
0.18 (Ball-on-disk test) |
| Wear Resistance | Approximately 3–5x the durability of hard anodizing. | |
| Compliance / Standards | MIL-A8625 TypeⅡ | MIL-A8625 TypeⅢ |
Kashima Coat Black Performance Graphs
Friction Test
Abrasion Test
Customer Success Stories
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Miyaki's Technology Powers the Quest for a World Championship
How We Support You
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Small-Lot Prototype Verification Support
We support small-lot prototypes with flexible processing conditions to verify performance and ensure a fast, reliable transition from development to full-scale mass production.
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Technical Consultation Backed by Deep Expertise
We provide specific technical data for design — such as hardness and film thickness — and propose optimized treatments tailored to your aluminum alloy and fabrication method, solving wear and galling issues in sliding parts.
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Stable Production & Traceability
With our automated lines and strict ISO 9001-based quality management, we guarantee a stable product supply and address concerns about lead times (standard: 2 weeks).
Black Anodizing FAQs
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Q1:What are the primary differences between standard black anodizing and Kashima Coat Black?
Standard Black Anodizing: This treatment is primarily used for visual appeal or anti-reflective purposes and uses dyes for coloring.
Kashima Coat Black: This is a functional surface treatment designed to provide lubricity and wear resistance. It is the ideal choice for sliding components or areas prone to high mechanical wear. -
Q2:Can I use standard black anodizing on sliding or high-friction parts?
We do not recommend this. Standard black anodizing lacks sufficient surface hardness and has a high friction coefficient, which often leads to rapid wear or seizure (galling) when components rub together. For these applications, we recommend Kashima Coat, which contains molybdenum disulfide (MoS2) to create a surface that is both hard and slippery.
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Q3:Is there a visual difference in the color or texture between the two treatments?
Visual characteristics, including the shade of black and surface texture, are equivalent to standard black anodizing.
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Q4:How significant is the difference in surface hardness?
Standard Black Anodizing: Typically offers a hardness range of 150-200 HV.
Kashima Coat Black:Provides a significant upgrade with a hardness range of 250-450 HV. This allows lightweight aluminum components to achieve scratch resistance comparable to steel. -
Q5:How does Kashima Coat perform outdoors regarding color fading?
A. Our tests indicate excellent color stability. Following a 400-hour weather resistance test conducted under ASTM D2565/G155 standards, the color deviation (ΔE) remained at 3 or less.
Related Anodizing Solutions
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Kashima Coat
- Deal for sliding parts
- Superior wear resistance
- Hard surface with high lubricity
- Excellent aesthetic finish
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MD Process
- Optimized for aluminum die casting
- High corrosion resistance
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Hard Anodizing
- Standard hard anodizing
- High hardness
