Anodizing Service for CNC Machined Parts

Anodizing improves corrosion resistance and wear properties, and enables color dyeing, making it perfect for aluminum parts.

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What is Anodizing?

Anodizing is an electrochemical process that forms a protective oxide layer on the surface of aluminum parts. This layer increases resistance to wear and corrosion and can be dyed in various colors for enhanced aesthetics.

Types of Anodizing We Offer
Chromic Acid Anodizing
Thin coating, good for tight tolerance parts.
Sulfuric Acid Anodizing
Most common, available in various colors.
Hard Anodizing
Thicker, harder, and more durable.
CNC Milling

CNC Milling

Utilizes rotating cutting tools for high-precision machining of flat surfaces, curves, and complex parts, ideal for mold making, aerospace, and automotive industries.

CNC Turning

CNC Turning

Uses rotating workpieces and cutting tools for efficient machining of cylindrical components, widely applied in shafts, discs, and precision parts manufacturing.

5 Axis Machining

5 Axis Machining

Enables multi-angle precision cutting, reducing setups and machining complex surfaces, perfect for high-end aerospace, medical devices, and precision mold manufacturing.

Technical Advantages of Anodizing

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Corrosion Resistance
Significantly improves resistance in marine, automotive, and aerospace environments.
Enhanced Wear Properties
Especially with Type III hard anodizing, the surface hardness can reach up to 500 HV.
Thermal Stability
Anodic coatings retain integrity up to 350°C.
Electrical Insulation
The oxide layer provides excellent dielectric strength.
Aesthetic and Functional Coloration
Pores in the anodized layer allow for dye absorption, enabling decorative and functional coloring.
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Technical Specifications

Property Typical Range
Coating Thickness 5–25 μm (Type II), up to 50 μm (Type III)
Surface Roughness Ra 0.8–3.2 μm depending on pre-treatment
Hardness Up to 500 HV (Type III)
Dielectric Strength ~1000 V per 25 μm
Available Colors Clear, Black, Red, Blue, Gold, Green, Custom
Base Materials Aluminum and aluminum alloys only

Design & Quoting Guidelines

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Material Compatibility
Anodizing is only applicable to aluminum and aluminum alloys.
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Surface Preparation
Pre-treatment such as polishing or sandblasting can significantly impact the final appearance.
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Color Matching
While we offer a wide range of colors, slight variations can occur due to alloy type and batch size.
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Masking Requirements
Critical dimensions, threads, or contact surfaces can be masked to avoid coating.

Request a Technical Evaluation

Send us your CAD drawings (STEP, IGES, or STL), specify anodizing type, desired color, and post-treatment requirements. Our surface engineering team will evaluate your design and provide the optimal process route.

Start production now and get your parts faster.