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CNC Machining in Aluminum

Aluminum is a light metal, only about one-third as dense as iron. It is valued for its low density and resistance to corrosion.

Advantages of Aluminum

Aluminum, renowned for its versatility, boasts myriad properties that make it highly sought after across various industries.

Key Features
Corrosion Resistance
Excellent Strength-to-Weight Ratio
Exceptional malleability
Excellent thermal conductivity

Available Aluminum Specifications

 The following table shows common aluminum alloys. If you have any other alloy requirements, please contact us.

Aluminum 2024

Tensile Strength
Elongation at Break
Hardness
Density

27,000 PSI

12%

Brinell 47

0.1 lb/in³
(2.78 g/cm³)

Aluminum 2024-T3

Tensile Strength
Elongation at Break
Hardness
Density

63,800 PSI

10%

Rockwell B75

0.1 lb/in³
(2.78 g/cm³)

Aluminum 2024-T351

Tensile Strength
Elongation at Break
Hardness
Density

57,300 PSI

10%

Rockwell B75

0.1 lb/in³
(2.78 g/cm³)

Aluminum 5052

Tensile Strength
Elongation at Break
Hardness
Density

28,000 PSI

30%

Brinell 47

0.097 lb/in³
(2.68 g/cm³)

Aluminum 5083

Tensile Strength
Elongation at Break
Hardness
Density

42,000 PSI

25%

Brinell 77

0.096 lb/in³
(2.66 g/cm³)

Aluminum 6061

Tensile Strength
Elongation at Break
Hardness
Density

18,000 PSI

25%

Rockwell B60

0.095 lb/in³
(2.63 g/cm³)

Aluminum 6061-T6

Tensile Strength
Elongation at Break
Hardness
Density

45,000 PSI

17%

Rockwell B60

0.098 lb/in³
(2.70 g/cm³)

Aluminum 6061-T651

Tensile Strength
Elongation at Break
Hardness
Density

45,000 PSI

17%

Rockwell B60

0.098 lb/in³
(2.70 g/cm³)

Aluminum 6063

Tensile Strength
Elongation at Break
Hardness
Density

13,000 PSI

27%

Brinell 25

0.098 lb/in³
(2.70 g/cm³)

Aluminum 7075

Tensile Strength
Elongation at Break
Hardness
Density

33,000 PSI

10%

Brinell 60

0.102 lb/in³
(2.81 g/cm³)

Aluminum 7075-T6

Tensile Strength
Elongation at Break
Hardness
Density

83,000 PSI

9%

Rockwell B87

0.102 lb/in³
(2.81 g/cm³)

Aluminum 7075-T651

Tensile Strength
Elongation at Break
Hardness
Density

83,000 PSI

9%

Rockwell B87

0.102 lb/in³
(2.81 g/cm³)

Aluminum MIC-6

Tensile Strength
Elongation at Break
Hardness
Density

23,900 PSI

3%

Rockwell B27

0.101 lb/in³
(2.70 g/cm³)

Aluminum Surface Finishes

The following table shows common surface finishes for aluminum.

Hardcoat Anodize

Bead Blast

Chem-Film  (Alodine)

Electropolish

Heat Treat

Electroless Nickel Plating

Polishing

Gold Plating

Silver Plating

Powder Coating

Aluminum FAQs

  • How to improve the surface quality of aluminum alloy 6061?
    Surface quality of aluminum alloy 6061 can typically be improved by reducing cutting speed and using smaller feed rates. Additionally, post-processing operations such as polishing and anodizing enhance surface quality.
  • How to prevent deformation of aluminum alloy 6061 during CNC machining?
    Selecting appropriate cutting parameters, such as the proper cutting speed, feed rate, and cutting depth, to reduce the input of heat. Additionally, proper fixation and support also help reduce deformation.
  • Which type of aluminum is most commonly utilized in CNC milling?
    Aluminum 6061 is the top choice for CNC milling due to its versatility, ease of machining, and commendable strength-to-weight ratio. It's cost-effective, recyclable, non-magnetic, heat-treatable, and inherently resistant to corrosion.
  • What advantages does CNC machining offer when working with aluminum?
    Aluminum is a preferred material for CNC machining due to its efficient machinability and numerous advantages. It chips easily and can be shaped quickly, allowing for machining speeds up to three times faster than iron or steel. Additionally, aluminum offers corrosion resistance, a favorable strength-to-weight ratio, high electrical conductivity, and the potential for anodization. It's also recyclable, making it environmentally friendly.