What are the different types of anodizing processes for aluminum parts?

Customized Mold Manufacturer

Table of Contents

Anodizing Processes for Aluminum Parts

Process TypeMain CharacteristicsTypical Applications
Sulfuric Acid AnodizingTransparent coating, easy coloring, high hardness, versatileConsumer electronics, interior decorative parts, general industrial products
Hard AnodizingExtremely thick coating, ultra-high hardness, superior wear resistance, insulatingHydraulic systems, transmission components, military equipment
Chromic Acid AnodizingThin coating, excellent corrosion resistance, minimal impact on fatigue strengthAerospace structural components
Oxalic Acid AnodizingHard coating, self-colored, good insulation propertiesElectrical components, specialty decorations
Adsorption ColoringRich and vibrant color varietyIndoor signage, gifts, electronic product housings
Electrolytic ColoringExcellent weather resistance, stable color performanceArchitectural aluminum profiles, outdoor facilities

Process selection depends on your specific requirements:

  • For vibrant colors and aesthetics → Sulfuric Acid Anodizing + Adsorption Coloring
  • For outdoor applications requiring durability → Sulfuric Acid Anodizing + Electrolytic Coloring
  • For ultra-high wear resistance and protection → Hard Anodizing
  • For strict dimensional and fatigue performance requirements → Chromic Acid Anodizing

We offer custom small-batch prototyping services for aluminum and plastic products.