Aluminum Anodizing

Aluminum anodizing is a controlled electro-oxidation process that transforms the metal's natural oxide into a dense hard layer of 6 to 25 µm, offering corrosion resistance, wear durability and bright color options without adding weight. After laser or router cutting, parts are mounted on racks in an acidic electrolyte bath where electric current grows hexagonal oxide cells whose pores readily accept dye. We offer five standard colors — clear, black, red, blue and gold — each sealed in boiling deionized water to fix pigments and meet MIL-A-8625F corrosion requirements. The treatment slightly increases dimensions (≈ 0.0005" growth per face), maintains electrical insulation and provides excellent adhesion for paint or adhesives. As each part must be cleaned, racked, anodized, dyed, sealed then dried, anodizing adds approximately 10 business days to overall lead time.

Standard colors: clear, black, red, blue and gold. Ideal for enhancing corrosion resistance and visual appearance of aluminum parts.

Anodizing process

Compatible Materials

Discover aluminum alloys compatible with our anodizing process.

Technical Specifications

What you need to know about anodizing

  • Anodized color may vary slightly from one production to another; group parts that must match visually in the same order.
  • Each part for anodizing first passes through our deburring line; deburring is automatically included with this service.
  • Each part must have at least one racking hole ≥ 1/16" (1.6 mm) diameter for processing.
  • Bend lines and other tooling marks may remain visible after anodizing.
  • Anodizing produces an electrically insulating layer; a non-hydrated 50 µm coating has resistivity of approximately 4 × 10¹⁵ Ω·cm²/m at 20 °C.

Available Colors

Discover our range of anodizing colors for your aluminum parts.