Pros of Aluminum CNC Machining – 5 Things You Must Know


CNC aluminum is an important material used in a variety of industrial and commercial applications. It has become increasingly popular due to its strength, resistance to corrosion, and flexibility. CNC stands for Computer Numerical Control, which is the use of computers to control machine tools during the manufacturing process. In this article, I will discuss what is CNC aluminum and five important things you must know about CNC aluminum and what it can be used for. So, let’s dive in!

I- Some Mechanical Properties of CNC Machined Aluminum Which You Must Know

Aluminum is one of the most commonly used metals in manufacturing today. Its versatility, durability, and lightweight nature make it a popular choice for everything from aerospace components to consumer electronics. But what exactly makes aluminum such a valuable material? In this article, I will explore some of the fundamental characteristics of aluminum as a metal.

  • Aluminum is incredibly lightweight. It has a lower density than steel, copper, or brass. This makes it an ideal choice for applications where weight is a critical factor like aircraft and automobiles.
  • It’s also is highly resistant to corrosion and oxidation due to its natural oxide coating.
  • One of the most unique aspects of aluminum as a metal is its malleability. Aluminum can be easily formed into complex shapes through techniques like CNC rapid prototyping.
  • Unlike other metals like steel or iron, aluminum does not rust or stain when exposed to water or moisture.
  • Another fundamental characteristic of aluminum is its high electrical conductivity. It conducts electricity better than copper on a per-weight basis, which makes it an essential material for electrical wiring and transmission lines.

II- Types of Aluminum Grades You Supposed to Know

All aluminum grades are created equal. Here are some of the grades you should know.


Aluminum 6061: The 6061 aluminum grade is a popular choice for structural applications due to its strength and corrosion resistance. This grade can be easily welded or machined and has good formability. It is commonly used in aircraft parts, marine fittings, and heavy-duty structures such as bridges and cranes.

Aluminum 6082: It has high tensile strength, making it ideal for use in heavy-duty structural applications such as bridges, cranes, and roof structures. Its excellent corrosion resistance also makes it suitable for marine environments, where exposure to saltwater can cause other metals to corrode quickly.

Aluminum 6082: It is highly machinable due to its low melting point and good thermal conductivity. This means that it can be easily formed into complex shapes or precision components without compromising on quality or durability.

Aluminum 5052: The 5052 aluminum alloy has excellent corrosion resistance and high fatigue strength, making it suitable for use in harsh environments like marine applications or chemical plants. Its high ductility also makes it ideal for forming complex shapes without cracking.

Aluminum 6063: Aluminum 6063 is that it can be easily extruded into various shapes and sizes. Due to its malleability, this alloy can be formed into complex profiles with minimal effort. This quality makes it popular in architectural applications like window frames, door frames, and other building components. Aluminum 6063’s low melting point allows for easy casting and machining processes.

Aluminum 7075: One of the most notable features of aluminium 7075 is its incredible strength. This property makes it an excellent choice for use in high-stress environments where durability and reliability are critical factors. The alloy’s resistance to stress cracking and fatigue makes it an ideal material for parts subject to repeated loading cycles. Aluminum 7075 is also incredibly versatile when it comes to fabrication. The alloy can be easily machined, formed, and welded using traditional methods like drilling or milling.

Aluminum 3033: Aluminum 3033 is a relatively new alloy in the aluminum family that is gaining popularity for its impressive combination of strength, durability, and machinability. This alloy is primarily used in aerospace and transportation industries due to its excellent performance under high-stress conditions. With a composition of 0.5% copper, this alloy offers improved fatigue resistance and exceptional surface finish.

Aluminum 2024: This versatile material is also commonly used in sporting goods such as bicycles and tennis rackets, due to its lightweight nature and durability. It is also utilized in the construction of high-performance automobiles and boats due to its impressive strength properties. Despite being known for its strength, Aluminum 2024 can still be easily formed into various shapes using common metalworking techniques like rolling or extruding.

III- For Which Purposes Are the Aluminum Components & Parts Used?

Aluminum components are commonly used in a wide range of applications across various industries. The versatility of aluminum makes it an ideal choice for different purposes such as transportation, aerospace, medical equipment, electronics, and more.

  • In the transportation industry, aluminum parts are widely used to reduce weight and improve fuel efficiency. From engine components to body panels and wheels- all can be made from aluminum using CNC machining techniques.
  • Aerospace companies also prefer lightweight materials like aluminum for aircraft construction due to their high-strength properties that can withstand harsh environments.
  • Medical equipment manufacturers use aluminum components because it is hypoallergenic and easy to sterilize.
  • Electronic devices such as laptops and smartphones also use aluminum parts due to their thermal conductivity properties that help dissipate heat generated by the device’s processor.

IV- Which Methods are Used to Avoid the Deformation of Aluminum in the CNC  Process?

Deformation is a common problem during the manufacturing process of CNC aluminum parts. Deformation can cause significant issues with the functionality and quality of the final product, leading to wasted resources, time, and money. It is essential to take adequate measures to prevent deformation from occurring.

  • High temperatures can cause excessive heat buildup that leads to the warping or bending of parts. Maintaining a consistent temperature in the machining environment will help prevent the thermal expansion or contraction that could affect part accuracy and dimensional stability.
  • It is important to ensure that the cutting parameters are set appropriately for the specific material being used. Aluminum has unique properties that require specific settings for optimal results. 
  • Using high-quality tooling and equipment will help maintain precision during machining processes which will minimize any deformation caused by vibrations or other factors.
  • Ensure that the cutting speed and feed rate are appropriate for the material being machined. Too high or too low cutting speeds and feed rates can lead to excessive heat buildup and ultimately cause deformation. 

V- How You Can Be Benefited By Using Aluminum in CNC Machining?

Aluminum is a widely used material in the CNC machining industry, and for good reason. Its unique properties make it an ideal material for creating complex parts with precision and accuracy. 

  • One of the primary benefits of aluminum is its strength-to-weight ratio. It’s a lightweight material that’s also incredibly strong and durable, making it perfect for creating high-performance components.
  • Aluminum has excellent resistance to corrosion which means your parts will last longer without needing frequent replacements.
  • Aluminum can be easily machined into complex shapes with tight tolerances due to its low melting point.
  • Aluminum has good corrosion resistance properties, which make it ideal for outdoor applications or harsh environments such as marine or chemical processing industries.


CNC Aluminum is an amazing metal that can be used in a variety of ways. It is lightweight, durable, cost-effective, and versatile. With the right knowledge and understanding of what is CNC aluminum and how it provides efficiency in your production, it can be used to create complex and intricate pieces. By investing in high-quality CNC Aluminum stock, you can produce precision parts for your project with maximum efficiency and accuracy. Keep these five facts about CNC Aluminum in mind when selecting materials for your next big project.