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CNC (Computer Numerical Control) machinable aluminum alloys refer to aluminum alloys that are well-suited for machining using CNC processes. CNC machining involves using computer-controlled machines to remove material from a workpiece to achieve precise shapes and dimensions. Aluminum is a popular choice for CNC machining due to its favorable combination of properties, including low density, good machinability, and corrosion resistance.
Some commonly used CNC machinable aluminum alloys include:
| Alloy | Properties | Applications | Machinability |
| 6061 Aluminum Alloy | – Good strength-Weldable-Corrosion-resistant | -Structural components-Automotive parts | -Excellent machinability |
| 7075 Aluminum Alloy | -High strength-to-weight ratio-Good fatigue strength-Fair corrosion resistance | -Aerospace components-High-stress structural parts-Military applications | -Challenging machinability, may require specialized tools |
| 5083 Aluminum Alloy | -High corrosion resistance– Good weldability– Moderate strength | -Marine applications– Shipbuilding-Offshore structures-Pressure vessels | -Generally machinable, attention to cutting parameters needed |
| 2024 Aluminum Alloy | – High strength– Fatigue resistance-Moderate corrosion resistance | -Aerospace industry-Aircraft structures | -Good machinability, avoid overheating |
| 5052 Aluminum Alloy | – Good formability-Weldable-Excellent corrosion resistance | – Sheet metal fabrication-Automotive parts | -Good machinability |
When selecting an aluminum alloy for CNC machining, it’s crucial to consider the specific requirements of the project, including the desired mechanical properties, environmental conditions, and machining processes involved. Additionally, working with a knowledgeable CNC machinist can help optimize the machining parameters for the chosen aluminum alloy.
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