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Aluminum CNC Machining Services
With 20 years of aluminum CNC machining experience. AT-Machining Empowering Your Designs with Unmatched Accuracy!
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Expert CNC aluminum machining service
Are you looking for a reliable, quick-turn supplier of machined aluminum components? Look no further, AT-Machining offers the best CNC aluminum machining service in the industry. Our highly qualified ISO9001 certified machine shop can make any custom design, simple or complex project. We provide rapid prototyping, small-batch machining, and high-volume production of end-use components.
Our fast and precision CNC machining capabilities include services for CNC Milling, CNC Turning, and CNC Lathe, with flexible production, and shipping options to meet you at the perfect price and product development stage.
Our team of experts is available 24/7 to answer any questions or help with your project.
CNC Milling
3 Axis, 4 Axis and 5 Axis CNC Machining Service for simple and complex geometries parts.
CNC Turning
CNC turning with live tools combines lathe and milling capabilities to machine parts with cylindrical features.
Finishes Services
Add multiple finishes to your parts, such as Anodizing, Sand Blast, Powder Coat, Plating, etc.
Aluminum Machining Tolerance Standards
For critical applications requiring superior accuracy, we can achieve tolerances as tight as ±0.001” (±0.025mm). By specifying your requirements on the print, you ensure every component is machined for perfect fit and function.
Comparison of common aluminum alloys
| Aluminum Grade | Cost | Ultimate Tensile Strength | Maximum Operating Temperature | Elongation | Hardness | Weldability | Thermal Conductivity | Common Applications |
| Aluminum 6061-T6 | $ | 291 - 320 MPa | 130 - 150 °C | 12 - 17 % | 60 HRB | High | 152 - 169 W/(m⋅°C) | Automotive, Marine, Electrical |
| Aluminum 7075-T6 | $$$ | 434 - 580 MPa | 100 °C | 2 - 11 % | 79-86 HRB | Poor | 131 - 137 W/(m⋅°C) | Aircraft and aerospace,Marine |
| Aluminum 5083-H111 | $$ | 270 - 350 MPa | 80 - 100 °C | 13 % | 74 HV | High | 118 - 128 W/(m⋅°C) | Marine industry,Pressure vessels |
| Aluminum 6082 | $ | 140 - 340 MPa | 130 - 150 °C | 6.3 - 18 % | 35-56 HRB | High | 160-180 W/(m⋅°C) | Structural frames,Pylons |
Note: The above table of aluminum alloy parameters for various grades is for reference only, contact us for more accurate details.
Available Aluminum Alloys for CNC Machining
Common aluminum alloys for CNC milling or turning include 6061, 7075, 6082, and 5083-H111. 6061 offers corrosion resistance and weldability; 7075 boasts high strength; 6082 provides balanced properties with good machinability; and 5083-H111, with exceptional seawater resistance, is perfect for marine and transport applications.
Each alloy has unique benefits that make them well-suited for different CNC machining applications.
Aluminum 6061
A versatile, heat-treatable alloy with magnesium and silicon. 6061-T6 offers high strength, good corrosion resistance, and excellent weldability. Its durability makes it ideal for aerospace, automotive parts, and structural frames where a combination of strength and processability is needed.
Aluminum 6063
With magnesium and silicon, 6063 is a heat-treatable alloy prized for its superb extrudability and smooth surface finish. It has good corrosion resistance and weldability, making it the standard choice for architectural applications like window and door frames.
Aluminum 2011
A heat-treatable “free-machining alloy” containing copper, lead, and bismuth. Aluminum 2011 offers outstanding machinability for creating intricate parts with fine finishes. It is commonly used for screw machine products and precision fasteners, though it has limited corrosion resistance.
Aluminum 7075
One of the highest-strength heat-treatable alloys, with zinc as its primary element. 7075 offers a strength-to-weight ratio superior to many steels, making it vital for aerospace and high-stress applications. Machinability is good, but welding is generally not recommended.
Aluminum 5083-H111
A non-heat-treatable, high-strength alloy with magnesium as its main element. 5083-H111 excels in marine environments due to exceptional corrosion resistance and high strength after welding. It is primarily used for shipbuilding, pressure vessels, and other demanding marine applications.
Aluminum 6082
A medium-strength, heat-treatable structural alloy containing manganese, silicon, and magnesium. 6082 offers an excellent combination of corrosion resistance, weldability, and good formability, used for bridges, cranes, and various transportation applications requiring robust performance.
AT-Machining
You Design It, We'll Make It.
CNC Machined Aluminum Applications
Aluminum parts can be found everywhere, in a range of industries, especially automotive, aerospace, industrial equipment and machinery, and consumer and computer electronics.
Aerospace Industry
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Automotive & Motorsport
Used for engine blocks, transmission housings, and suspension components to reduce weight, improve fuel efficiency, and enhance performance.
Electronics & Telecommunications
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Medical & Healthcare
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Design for Manufacturability (DFM) Quick Guide
In AT-Machining, we believe exceptional parts begin with exceptional design. Design for Manufacturability (DFM) is the critical bridge between concept and reality, aimed at optimizing designs to simplify manufacturing, reduce costs, and shorten lead times. By following these core principles, you can save your budget and receive higher-quality components.
Avoid warping by designing uniform walls. We recommend a minimum thickness of 1.0mm (0.04”) for aluminum to ensure stability and prevent deformation during the machining process.
Sharp internal corners increase cost and create stress points. Always add a radius—ideally larger than the tool’s radius. This allows for faster machining and creates stronger parts.
Reduce costs and lead times by using standard drill sizes and common thread series (e.g., M-series). Keep hole depths below 10 times their diameter for the best results.
Minimize deep pockets and complex 3D surfaces. Prioritizing simple 2.5D features will significantly boost machining efficiency, reducing both your project’s timeline and overall cost.
Avoid over-engineering. Select alloys based on application needs (e.g., 6061 vs. 7075). Apply tight tolerances only to critical features; use our standard tolerance for non-critical surfaces.
Surface Finishes For CNC Machined Aluminum Parts
Many types of surface finishes can be applied to CNC machined aluminum parts. The most common finishes AT-Machining provides are anodizing, powder coating, bead blast and plating. Each of these finishes has unique benefits. Choose the one best suits your needs!
| Name | Description | |
 | As machined | The machined aluminum parts are left with visible tool marks and potentially sharp edges and burrs, which can be removed upon request. |
 | Bead Blasted | Give the machined parts a smooth and uniform matte surface finish, thereby removing tool marks. |
 | Polishing | Creating a smooth and shiny surface by manually polishing in multiple directions or by applying a chemical polish treatment. |
 | Anodizing | Type II (Anodizing color or clear) or Type III (Anodizing hard coat) Anodizing does not cover tool marks unless bead blasted beforehand. |
 | Chromate Conversion Coating | Increase the part's corrosion resistance while retaining its conductivity. RoHS compliant. |
 | Decorative Chrome Plating | Enhance aesthetics and durability of the cnc aluminum components. |
 | Powder Coat | Applying powdered paint to the components and then baking it in an oven, which results in a stronger, more wear- and corrosion-resistant layer that is more durable than traditional painting methods. |
Gallery of CNC machined Aluminum parts
Our team specializes in rapid prototyping and low & large volume production orders for our global customers in multiple industries: medical devices, aerospace, automotive, defense, electronics, hardware startups, industrial automation, machinery, marine and robotics, and many more.
CNC Machining Aluminum FAQs
Do you have a minimum order quantity?
NO! – No minimum quantity! AT Machining provides prototypes and short to medium-run production machining services.
What type of design files does AT Machining accept for quoting?
For the 3D drawing, we would prefer STEP, IGES, or X_T format. For the 2D drawing, we would prefer PDF format there are tolerances with the dimensions if possible.
How can I pay AT Machining?
AT Machining accepts payment in two ways: 1. Bank to bank wire transfer 2. PayPal
What general tolerances can AT Machining achieve?
General Machining Tolerances on metal to +/- 0.005" (+/- 0.127 mm) following ISO 2768 unless otherwise specified. Plastics and composites will be +/- 0.010”(+/- 0.254 mm).
What precision tolerances can AT Machining achieve?
Precision Machining Tolerances down to ±.0002" (0.005mm). AT can manufacture and inspect to tight tolerances per your drawing specifications.
How quickly can I get my parts?
Lead times are 2 to 3 weeks for prototypes and 4 weeks for production runs. Emergency and rush services are available.