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Mastering Aluminum Machining: Essential Insights and Techniques

Dive into the world of aluminum machining and discover how its properties make it ideal for diverse industrial applications. Learn about the specific machining techniques, suitable aluminum types, and the advantages of using aluminum in manufacturing.

Understanding Aluminium Machining Services

Machining services refer to a subtracting manufacturing process. Using machining services, you can remove materials from a workpiece and reshape that into your desired product or part of a product. Machining is a standard manufacturing process for metal-based products. However, you can use machining services for ceramic, plastic, wood, and other composite materials. 

- Aluminum is easy to machine

So, when you are referring to aluminum machining services, you are talking about machining services that reshape different types of Aluminum into the desired shape of your product or part. Aluminum is the most common metal used in CNC machining services. 

Aluminum has a lighter weight, greater formidability, and lower material hardness, and that’s why it is ideal for machining and various other operations taken in the manufacturing process. 

Aluminum machining services are an umbrella term that includes various machining processes such as drilling, turning, and milling. You can use several types of machining technologies to achieve your aluminum machining services. 

The Machinability of Aluminum

Aluminum is pretty easy to machine compared to other metals. The machinability of a material depends on its physical properties and cutting conditions. Aluminum is relatively easy to shape, and you can chip them quickly, making them an easy-to-machine material. 

When we say “chipping easily,” we say that it is more “free-machining,” which means machines need to spend less time chipping and more time cutting. Aluminum is easy to shape, and you can machine them 3 to 4x faster than steel or iron. In fact, aluminum machining services providers use speeds over 10,000 RPM and feed over 200 ipm in their machining process. 

All other metals around Aluminum have the highest level of machinability. That is why it is widely used in various types of applications such as knobs, gears, pipe stems, mobile phones, machine parts, etc. 11 aluminum machining

Machining Techniques For Aluminum Parts

Machining techniques commonly used for aluminum parts include:
  • Turning: Turning refers to the rotation of a workpiece on a lathe in order for there to be cutting by using tools which take away material so as to make cylindrical shapes. It is also commonly applied to aluminum shafts, pins and connectors.
  • Milling: Milling uses a selection of cutting tools on CNC powered machines to cut off material from the aluminum shaped workpieces, forming complex designs. Flat milling, vertical milling and contourmillung is used for aluminum brackets panels intricate parts.
  • Forging: The low melting point of aluminium makes it less favorable for traditional forging. But some aluminum alloys can undergo hot forging in CNC-controlled machinery for special purposes.
  • Casting: Aluminum casting refers to the process of pouring molten aluminium into molds that solidify when they attain shape. The application of cnc technology makes it possible to produce accurate molds for casting complicated aluminum items such as car parts and engine components.
  • Laser Cutting: Laser cutting uses a concentrated laser beam to achieve precision cuts of aluminum sheets or plates, which are perfect for complex shapes and thin-gauge aluminum.
These machining processes are flexible in aluminum processing, and manufacturers can select the best method depending on design considerations, material specifications as well as production quantity.7 aluminum machining

Compare Aluminum CNC Machining and Aluminum Casting

Two different manufacturing processes for producing aluminum parts are CNC machining of aluminum and casting of this alloy. CNC machining is a subtractive process that begins with stock solid aluminum, holding the original material properties until part completion. It is good at accuracy, such for detailed shapes and very close tolerances. But it necessitates tool configuration and hence is applicable to lower production volumes and rapid prototyping. It is often the case that CNC-machined parts feature smoother surface finishes requiring minimal post processing.

In contrast, aluminum casting is a forming process involving the pouring of molten aluminum into molds. This may result to changes in material characteristics and further surface treatment. Casting is very effective for a high-volume production of complicated shapes, which can be costly and time consuming in the process of creating molds. It creates waste with the additional material from the gating system.

These two methods differ depending on particle complexity, precision requirements as well the number of parts that one need to produce and cost considerations. CNC machining is preferred to achieve precision and smaller volumes of production, while casting best serves for high-volume manufacturing of complicated components understanding that more finishing may be required.

The Most Suitable Aluminum Types for Machining

The answer is Aluminium 6061-T6, but there are some exceptions. Other types of aluminum alloys are used for specific purposes. aluminum forging service 3

Aluminum 6061-T6


DensityMelting PointTensile Yield StrengthMachinabilityShear StrengthHardness, Brinell 
2.7 g/cc582 – 652 °C276 MPa50 %207 MPa95

Most manufacturers use aluminum 6061-T6 as the standard grade for CNC machining. This is the most common aluminum alloy you would see more often in different types of applications. Aluminum 6061-T6 is easy to machine and can endure different heat treatments. 

Aluminum 6061-T6 can match most purposes for materials you see in various types of applications. But this alloy is not suited for high-stress applications even though it has a relatively good strength-to-weight ratio. 

You will see aluminum 6061-T6 in standard applications such as bicycle frames, automotive parts, motorcycle parts, computer parts, valves, etc. 

 Aluminum 6061 alloy

Aluminum 7075-T6


DensityMelting PointTensile Yield StrengthMachinabilityShear StrengthHardness, Brinell 
2.81 g/cc477 – 635.0 °C503 MPa70 %331 MPa150

Aluminum 7075-T6 is used in high-performance or high-stress applications. This grade of aluminum alloy is famous for its outstanding strength-to-weight ratio. Moreover, the hardness of aluminum 7075-T6 can be compared to some softer steels. 

If you are looking to develop applications for the military and aerospace industries, aluminum 7075-T6 should be your first choice. 

Though this alloy comes with excellent mechanical properties, it has its drawbacks. Aluminum 7075-T6 is less resistant and less pliable than other grades.  

Aluminum 2024-T4


DensityMelting PointTensile Yield StrengthMachinabilityShear StrengthHardness, Brinell 
2.78 g/cc477 – 635.0 °C441 MPa70 %283 MPa120

This aluminum alloy offers fracture toughness and excellent fatigue resistance. If we compare this aluminum 2024-T4 to aluminum 7075-T6, the latter one is stronger. But aluminum 2024-T4 is also used in aerospace applications. 

You will see aluminum 2024-T4 in transport vehicle parts, aircraft fuselage, etc. However, you should be aware that this alloy has a high sensitivity to thermal shock and poor corrosion resistance. 10 aluminum machining

Aluminum 6082


DensityMelting PointTensile Yield StrengthMachinabilityShear StrengthHardness, Brinell 
2.70 g/cc585-650°C310MPa70 %210 MPa65

This alloy is best suited for standard applications with some added toughness and strength. You will see aluminum 6082 more often in the construction industry applications such as towers, trusses, bridges, etc. However, if you plan to use this alloy, you should remember that producing thing walls using this alloy is difficult. 

Advantages Of Aluminium Machining

Here are the benefits of aluminum machining:  


This is the most critical reason why engineers choose to take aluminum machining services. Aluminum is the most simple metal you can machine. In addition, it is beneficial from the business costing part, and the end-user is also satisfied with the product.  cnc aluminum parts quotes

You can cut and shape Aluminum quickly with the help of CNC machining tools. And, as the machining process is easy and takes less time, manufacturers need to pay less for taking aluminum machining services. 

Another essential aspect of good machinability is that aluminum machining services providers can produce parts or products with nearly zero tolerance. 

Corrosion resistance

Though different aluminum alloys show a different level of corrosion resistance, widely used alloys such as aluminum 6061come with high resistance against corrosion, however, strong aluminum alloys don’t offer high resistance against corrosion as they use more copper to gain extra strength. 

Strength-to-weight ratio

The two most important factors you want to find in metal (as a manufacturer, of course) are less weight and solid strength. If the two are combined, that makes the metal an ideal choice for industrial productions. And that is precisely what you get from aluminum alloy. They come with excellent strength to weight ratio. 

However, different aluminum alloy grades come with different strength-to-weight ratios, and engineers pick one that best suits the application type. 

Automotive industry use aluminium machining services

Electrical conductivity

Aluminum may not be as conducive as copper, but they have fair enough conductivity for using them in electronic products. Pure Aluminum comes with 37.7 million siemens per meter conductivity at a standard temperature and is significantly more conductive than some other metals, such as stainless steel. 

Anodization potential

So far, we have been discussing the technical advantages that Aluminum delivers to the manufacturers. But when you are manufacturing, you can not ignore the aesthetic part of the finished product as that has high importance for end-users. 

You can treat Aluminum with anodization, which is a surface finishing technique that thickens and oxidizes the protective layer. However, it is not a part of aluminum machining services that is another critical reason why engineers choose Aluminum for their projects. 


Aluminum alloys are highly recyclable. Most businesses these days want to make a minimal impact on nature with their products, and Aluminum’s recyclability allows them to support their motto. Besides, when using CNC machining technology, recyclability is crucial because this machining process generates a great deal of waste material through its cutting tools. 

Challenges in Machining Aluminum Parts

Machining aluminum parts presents unique challenges. Basically, aluminum adheres to cutting tools and often necessitates correct tool selection along with lubrication so as not to get distorted. Chip control is also a problem because aluminum produces long stringy chips and thus specialized chip breakers as well as evacuation systems are required.

Furthermore, the abrasiveness of aluminum takes a toll on tool life resulting in demands for sturdy materials. Heat management is crucial as aluminum heats up quickly. They must be properly cooled and lubricated. In addition, both workpiece flexibility and achieving fine surface finishes with tight tolerances are limited. The correct selection of the aluminum alloy and overcoming adhesive forces between tooling and workpiece are crucial. Environmental issues should also be considered. Indeed, skilled machinists and appropriate methods can solve these problems effectively; high-quality aluminum parts are manufactured accordingly.

Industries That Use Aluminum Machining Services

As we have mentioned above, Aluminum is the best metal for machining, and therefore most manufacturers mostly use aluminum machining services for their applications. Let’s see some of the industries that use aluminum alloy for their applications.  Aluminum machining There are several industries which are employing aluminum machined parts. Here are some of them:
  • Bicycle and motorcycle industries use aluminum machining services to manufacture different body parts. 
  • Automotive industries use aluminum machining services for parts, such as shafts. 
  • For the aircraft fitting aerospace industry, use aluminum alloy 
  • The electronic industry uses aluminum machining services for electric appliances and electronic components. 
  • The food and pharmaceutical industry uses aluminum machining services to manufacture parts that do not react with organic materials. 
  • The sports industry also uses aluminum machining services to produce various products such as baseball bats, whistles, etc. 

Choose Reliable Custom Aluminum Machining Service

The process of choosing a trustworthy custom aluminum machining service includes determining the scope of work, selecting experienced providers with modern equipment, examining quality assurance procedures and gathering information about past clients. It would be far better to focus more on communication, responsiveness and quality than cost. Visits to the facility and detailed contract reviews may turn out to be invaluable. Finally, choosing a certification service with an established reputation and the ability to create custom requirements results in vailable aluminum parts of excellent quality.custom cast aluminum parts 1

The Process of Custom Aluminum Parts From Manufacturers

Getting custom aluminum parts from manufacturers is done through a number of main steps. It begins with an initial meeting to identify project needs. Design and engineering then follows mostly via CAD modeling. The choice of materials attributes to the proper aluminum alloy. The tooling and setup are ready, as production runs with different manufacturing methods. First, quality control is used to ensure that the parts comply with set standards and secondly optional surface finishing. Quality is confirmed during final inspection before packaging and delivery. Post-sales support resolves any issues, highlighting the relevance of enhancing communication and working closely with a manufacturer to achieve particular specifications and standards for quality.

In conclusion, acquisition of custom aluminum components entails a consultative process that involves design material tooling production and quality control as crucial steps. Surface finishing, final inspection and post-sales support rounds off the process. Communication with the manufacturer is critical for achieving exact specifications and quality standards.18 aluminum machining


Most manufacturers prefer aluminum alloy for their applications, and we have discussed the reasons in this article. Therefore, aluminum machining services have become essential for industrial production. If you want to know more specific information don’t hesitate to message us. Our aluminum machining experts will answer all of your queries at the earliest possible time.

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