Surface Finishing for Aluminum 6061-T6

Aluminum 6061 accepts a wide range of surface finishes and is one of the best materials for anodizing, producing vibrant colors and excellent wear resistance.

Recommended Machining Parameters

ParameterValue
Achievable Tolerances±0.005 mm (finished)
Surface FinishRa 0.4-3.2 μm depending on treatment
Cutting SpeedN/A — post-machining process
Feed RateN/A — post-machining process
Tooling RecommendationsN/A — surface finishing chemicals and equipment

Expert Machining Tips

1

Type II anodize for color and corrosion protection

2

Type III (hardcoat) for wear resistance

3

Bead blast before anodize for uniform matte finish

4

Chromate conversion (Alodine) for conductivity + corrosion protection

Common Parts Made

Anodized housings

Powder-coated enclosures

Chromated aerospace parts

Brushed consumer products

Machining Challenges

  • Anodize adds 10-25μm thickness per side
  • Color matching between batches
  • Sharp edges may have thin anodize coverage

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