Dimensional Tolerance
±0.005 mm
Achieved through high-end Japanese and German machining centres, with CMM verification on critical features.
Aluminum Alloy · Prototype to Mass Production
Precision Aluminum CNC Machining Services & Part Manufacturing
We provide custom aluminum alloy components, supporting everything from prototyping to mass production. With efficient and convenient global shipping, delivery can be completed in as fast as three days, ensuring results that meet your expectations.
- Tolerances to ±0.005 mm verified on CMM
- Surface finish down to Ra 0.8 µm, anodize-ready
- 6061 / 7075 / 2024 / 5052 / 6063 and more, with material traceability
100+CNC Machines
3–7 DayTypical Lead Time
24hrRapid Quoting
6k㎡Factory Area
Measured, Not Claimed
The Numbers Behind Every Aluminum Part
Surface Roughness
Ra ≤ 0.8 µm
Meets the stringent requirements of optical components and high-end consumer electronics.
Quality Assurance
ISO 9001:2015
Rigorous 100% inspection protocols for critical features, using automated OMM and CMM equipment.
Aluminum Machining Capabilities
Precision Aluminum CNC Capabilities
High-precision, high-efficiency customised solutions for complex aluminum components.
01
5-Axis Simultaneous Machining
Advanced multi-axis milling for complex geometries and organic shapes in a single setup.
- Integrated complex structures
- Superior surface finish
02
Advanced Surface Finishing
A full spectrum of post-processing, including anodizing, bead blasting and hard coating.
- Custom colour matching
- Enhanced wear resistance
03
Rapid Prototyping
Swift 24–48 hour turnaround for functional prototypes to accelerate your R&D cycle.
- DFM feedback included
- Quick iteration support
04
High-Volume Production
Scalable manufacturing lines optimised for consistency and cost efficiency in large batches.
- Automated cell machining
- Unit cost optimisation
05
Tight Tolerance Control
Maintaining critical dimensions across large production runs with micron-level precision.
- Precision boring & reaming
- Stable thermal control
06
Material Versatility
Expertise across a wide range of alloys, including the 6061, 7075, 2024 and 5052 series.
- Aerospace grade alloys
- Certified material traceability
Sample Gallery
Custom CNC Machined Aluminum Parts
Explore our manufactured aluminum components, demonstrating our capability to deliver industry-compliant solutions across diverse sectors.
Choosing the Right Aluminum Material
Aluminum Alloy Material Selection
An extensive inventory of premium industrial and structural aluminum alloys, precision-matched to your custom part specifications.
High-Strength Aerospace Grades
| Aluminum 6061 | Versatile structural standard |
|---|---|
| Aluminum 2024 | High-fatigue aircraft skin |
| Aluminum 6063 | Precision architectural profiles |
| Aluminum 7075 | Ultimate static strength |
Corrosion-Resistant & Specialty
| Aluminum 2A12 | Aviation-grade high hardness |
|---|---|
| Aluminum 5052 | Salt-safe marine plate |
| Aluminum 7050 | High-toughness thick sections |
Material Selection Guide
| Strength | 7075 & 2A12 offer the highest mechanical loads |
|---|---|
| Durability | 5052 is the benchmark for harsh environments |
| Machinability | 6061 / 6063 |
Our Facility
Advanced Aluminum CNC Machining Centres
Explore our state-of-the-art facility, equipped to deliver high-standard CNC aluminum components for your most demanding projects.
Design for Manufacturability
Aluminum CNC Machining Design Guide
Recommended values against achievable limits, with the engineering reason behind each one. Use these when you are laying out a part and want to avoid cost you do not need.
| Feature | Recommended | Achievable Limit | Engineering Note |
|---|---|---|---|
| Wall Thickness | 1.5 mm – 2.0 mm | 0.8 mm (minimum) | Aluminum is rigid, so thin walls stay stable during finishing. Keep the wall-to-height ratio below 10:1 to prevent vibration and hold a mirror-like finish. |
| Cavity Depth | L:D ratio 3:1 | L:D ratio 5:1 (limit) | Keep standard depth within 3× tool diameter. Depths beyond 6× need specialised long-neck tools and add cost. |
| Internal Corners | R ≥ 1.0 mm | R = (depth / 6) + 0.5 mm | Draw corners slightly larger than the tool radius (for example R3.2 for a 6 mm cutter) so the cutter can run smooth feed rates and leave no tool marks. |
| Blind Hole Threads | Depth = 1.5× dia | Depth = 2.0× dia (max) | Leave 3–5 pitches of drill clearance at the bottom. Going beyond 2× diameter adds no strength but raises tap breakage risk. |
| Surface Roughness | Ra 3.2 µm | Ra 0.8 µm (premium) | Standard high-quality finish is Ra 1.6 µm. Reserve Ra 0.8 µm for critical sealing surfaces or premium optical parts. |
| Precision Tolerances | ±0.05 mm | ±0.01 mm | Apply ±0.01 mm only to critical functional dimensions. Use ISO 2768-m (medium) for features that do not mate. |
| Edge Treatment | Sharp edges | 0.1 – 0.3 mm chamfer | Always add a small chamfer to sharp edges: it improves anodizing coating consistency and prevents brittle chipping. |
Stress Relieving For high-strength materials such as 7075, thin and complex parts are prone to distortion after machining. We recommend specifying the T651 temper, which has been stress relieved by stretching.
Weldability Warning 2024 and 7075 are essentially non-weldable because of a high cracking risk. If the assembly has to be welded, specify 5052 or 6061 instead.
Thermal Conductivity For heat-sink applications we recommend 6063, whose thermal conductivity is better than 6061. Of these alloys, 7075 has the poorest thermal conductivity.
Technical Expertise
Aluminum CNC Machining: Challenges & Solutions
- Industrial Tools
- Automotive (EV)
- Robotics
- Communication
Project Specs
- MaterialAl 6061-T6 (stress relieved)
- Critical DimConcentricity & perpendicularity
- Tolerances±0.01 mm on critical bores
Pneumatic Valve Body Precision Milling
Deep-Hole & Cross-Cavity WorkThe Technical Challenge
The primary difficulty lay in multi-directional deep-hole drilling and cross-cavity milling. In soft aluminum, long drill bits tend to drift, and high-speed milling in deep pockets often causes chip recutting, which degrades the surface finish and leads to dimensional instability from heat buildup.
Our Engineering Solution
We used high-pressure through-spindle cooling at 70 bar to force chips out of deep cavities instantly, preventing heat buildup. For the precision bores we ran a two-step process: roughing, then a thermal stabilisation rest period, then final finishing with PCD reamers to hold ±0.01 mm concentricity across the full 150 mm length.
Ra 0.4 µmInternal Finish
0.01 mmConcentricity
99.8%Pass Rate
Project Specs
- MaterialAluminum 6063 (high thermal)
- Size600 × 450 × 12 mm
- RequirementWarp-free flatness
EV Battery Thermal Management Plate
Thin-Plate Warp ControlThe Technical Challenge
Machining large, thin aluminum plates is notorious for warping. As surface material is removed, internal residual stresses release and the plate bows or twists. Traditional clamping often masks the warp during machining, only for the part to spring out of tolerance once it is released.
Our Engineering Solution
We adopted a stress-release cycle. The plates were first rough-milled on both sides to release primary stresses. A vacuum suction fixture with controlled pressure then held the part without mechanical distortion, and final finishing used a fly cutter at high feed to minimise tool-to-part contact time and manage heat-induced expansion.
< 0.05 mmFlatness
12%Weight Reduction
OptimisedCycle Time
Project Specs
- MaterialAl 7075-T6 (aviation grade)
- GeometryUndercuts & compound angles
- PrecisionH7 bearing fits
5-Axis Robotic Articulation Housing
Simultaneous 5-Axis & H7 BoresThe Technical Challenge
7075-T6 is far more abrasive than 6061, which causes rapid tool wear and fluctuating bore sizes. The organic, non-prismatic shape also required continuous 5-axis motion with zero dwell marks at the transition points between axes, because those marks would compromise structural integrity under high torque.
Our Engineering Solution
We programmed the toolpaths using simultaneous 5-axis trochoidal milling to hold a constant tool load. For the H7 bores we used an in-machine infrared probing system to measure after roughing and automatically adjust the tool offset for the finish pass, compensating for tool wear in real time.
H7Bore Fit
ZeroSurface Steps
HighTorque Resistance
Project Specs
- MaterialAl 5052-H32 (sheet / plate)
- RequirementIP67 sealing & conductive finish
- FeatureEMI gasket grooves
Outdoor RF Signal Transceiver Enclosure
Sealing & EMI ShieldingThe Technical Challenge
Outdoor electronic enclosures need a perfect seal. The narrow gasket grooves (1.5 mm wide) had to be machined with high consistency across a large surface area, because any burr or roughness in the groove would compromise the IP67 rating. The surface also had to stay conductive for EMI shielding while resisting 300+ hours of salt spray.
Our Engineering Solution
We used diamond-coated micro end mills to achieve a burr-free groove finish straight off the machine, eliminating manual deburring that could damage the edges. Post-machining, a yellow chromate conversion coating (Alodine) provided a salt-spray resistant barrier while keeping the surface electrically conductive for grounding and RFI shielding.
IP67Rating
300+ hrsSalt Spray
Burr-FreeGrooves
Efficient Collaboration Process
Custom CNC Aluminum Parts Made Simple
Get your parts to market faster with a streamlined, high-efficiency production process. We handle the complexity so you can focus on scaling your brand.
01
Quote & DFM
Upload STP or DXF files for instant pricing and a manufacturability analysis.
02
Design Optimisation
Our engineers refine the design for cost efficiency and production speed.
03
Precision Fabrication
Advanced equipment and expert engineering, run to a locked process.
04
Quality Validation
CMM verification and ISO 9001 standardised inspection protocols.
05
Finish & Delivery
Surface finishing, assembly and global logistical dispatch.
FAQ
Addressing Your Concerns
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What surface finishes are available after aluminum CNC machining?
Available finishes include anodizing (clear, black, colour), hard anodizing (Type III), bead blasting, brushing, powder coating, painting and electroplating. Selection depends on corrosion resistance, wear resistance, appearance and functional requirements.
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Which industries use aluminum CNC machining?
Aluminum CNC machining is widely used in aerospace, medical devices, electronics, telecommunications, robotics, optical and laser systems, automotive and new energy industries.
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Does anodizing affect dimensional accuracy?
Yes. Anodizing adds an oxide layer typically 5–25 µm thick, with roughly 50% growing inward and 50% outward. We apply dimensional compensation or masking to critical features so tolerances are maintained.
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Does aluminum CNC machining comply with ISO 2768 or ASME standards?
Yes. Aluminum CNC machining commonly follows ISO 2768-m/f for general tolerances and ASME Y14.5 for GD&T, unless the drawing specifies otherwise.
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Which aluminum alloy is best for CNC machining?
6061 is the most commonly used alloy because of its excellent machinability and cost performance. Other options include 7075 for high strength, 2024 for fatigue resistance, 5052 for corrosion resistance, and 6063 for better surface finish and thermal conductivity.
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What aluminum machining services and milling solutions are available?
Services include 3-axis to 5-axis CNC milling, CNC turning, mill-turn machining, rapid prototyping, low-volume and batch production, DFM optimisation and surface finishing.
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Can sheet metal fabrication be combined with aluminum CNC machining?
Yes. Sheet metal fabrication and aluminum CNC machining can be combined to produce complete assemblies such as enclosures, frames and structural modules, which improves consistency and reduces lead time.
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