CNC Turning for Aluminum 6061-T6

Aluminum 6061 is ideal for CNC turning, producing excellent chip formation and surface finish at high speeds. It is the most commonly turned aluminum alloy.

Recommended Machining Parameters

ParameterValue
Achievable Tolerances±0.005 mm (±0.0002")
Surface FinishRa 0.2-0.8 μm
Cutting Speed300-600 m/min
Feed Rate0.08-0.25 mm/rev
Tooling RecommendationsCarbide inserts with sharp edge, positive rake. PCD for high-volume. Cermet for finishing.

Expert Machining Tips

1

Use sharp positive-rake inserts

2

High cutting speeds (300+ m/min) for best finish

3

Chip breakers may not be needed — chips break naturally

4

Light finishing passes for mirror finish

Common Parts Made

Shafts and spindles

Bushings and spacers

Threaded fittings

Knobs and handles

Pneumatic cylinder bodies

Machining Challenges

  • Built-up edge at low speeds
  • Long chips at high depth of cut

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