CNC Milling for Aluminum 7075-T6

Aluminum 7075 machines well despite its high strength, producing clean chips and good surface finishes. Higher cutting forces than 6061 require slightly more rigid setups but the material rewards with excellent precision.

Recommended Machining Parameters

ParameterValue
Achievable Tolerances±0.005 mm (±0.0002")
Surface FinishRa 0.4-1.6 μm
Cutting Speed150-350 m/min (SFM 500-1150)
Feed Rate0.05-0.12 mm/tooth
Tooling RecommendationsCarbide end mills with 2-3 flutes, TiAlN or ZrN coated for extended life.

Expert Machining Tips

1

Slightly lower speeds than 6061 due to harder matrix

2

Ensure rigid workholding to prevent vibration

3

Use sharp tools to avoid work-hardening

4

Flood coolant recommended for deep pockets

Common Parts Made

Aerospace structural components

Aircraft fittings

Gears and shafts

High-stress brackets

Military components

Machining Challenges

  • Higher cutting forces than 6061
  • Stress relieving may be needed for thin-wall parts

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