When you need high-quality aluminum parts—whether for prototyping, custom OEM components, or large-scale production—CNC machining is often the best solution.
This guide covers CNC-machined aluminum parts, the benefits of powder coating, and how to navigate OEM/ODM manufacturing for the best results.
Why Choose CNC Machining for Aluminum Parts?
Aluminum is a favorite in industries from aerospace to consumer electronics because it’s:
✔ Lightweight (1/3 the weight of steel)
✔ Strong (especially alloys like 6061 & 7075)
✔ Corrosion-resistant (naturally forms a protective oxide layer)
✔ Easy to machine (faster than steel, reducing costs)
Industries That Rely on CNC-Machined Aluminum:
- Automotive (Brackets, housings, heat sinks)
- Aerospace (Structural components, drone parts)
- Electronics (Enclosures, heat dissipation parts)
- Medical (Surgical tools, device housings)
OEM vs. ODM: Which is Right for You?
OEM (Original Equipment Manufacturing)
- You provide the exact design
- Factory produces parts to your specs
- Best for branded products or proprietary components
ODM (Original Design Manufacturing)
- Factory helps design & engineer the part
- Useful if you need custom solutions but lack in-house design
- Common for consumer products, enclosures, and modular parts
Powder Coating: The Best Finish for Aluminum?
After CNC machining, raw aluminum can still oxidize, scratch, or wear over time. That’s where powder coating comes in—a durable, attractive finish that adds both protection and style.
Benefits of Powder Coating:
- Extreme durability – Resists chipping, UV rays, and chemicals
- Aesthetic flexibility – Available in any color, texture, or gloss level
- Eco-friendly – No solvents, minimal waste
- Cost-effective – Cheaper than anodizing for large batches
Common Applications:
- Automotive trim & wheels
- Outdoor equipment (resists weathering)
- Consumer electronics (premium look & feel)
The CNC Machining + Powder Coating Process
- Design & Prototyping (CAD/CAM modeling)
- CNC Machining (Milling, turning, or multi-axis cutting)
- Deburring & Surface Prep (Smoothing sharp edges)
- Pre-Treatment (Cleaning & chemical etching for coating adhesion)
- Powder Coating (Electrostatically applied & baked for hardness)
- Quality Inspection (Dimensional checks, coating thickness tests)
Lead Time?
- Prototypes: 3-5 days
- Mass production: 2-4 weeks (depending on order size)
How to Choose the Right Aluminum Alloy
| Alloy | Best For | Machinability |
| 6061 | General use (brackets, frames) | Excellent |
| 7075 | High-stress aerospace parts | Good (but harder to machine) |
| 5052 | Marine & outdoor applications | Moderate |
| 2024 | Aircraft structures | Fair (requires expertise) |
Final Thoughts
CNC-machined aluminum parts + powder coating = a winning combo for durability, precision, and aesthetics. Whether you need OEM production or ODM design support, the right manufacturer can turn your concepts into high-performance components.
| | CNC Turning, CNC Milling, Laser Cutting, Bending, Spining, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding,3D Printing,Rapid Prototype,Moulds etc. |
| | Aluminum: 2000 series, 6000 series, 7075, 5052, etc. |
| Stainlesss steel: SUS303, SUS304, SS316, SS316L, 17-4PH, etc. |
| Steel: 1214L/1215/1045/4140/SCM440/40CrMo, etc. |
| Brass: 260, C360, H59, H60, H62, H63, H65, H68, H70, Bronze, Copper |
| Titanium: Grade F1-F5 |
| Plastic: Acetal/POM/PA/Nylon/PC/PMMA/PVC/PU/Acrylic/ABS/PTFE/PEEK etc. |
| | Anodized, Bead Blasted, Silk Screen, PVD Plating, Zinc/Nickl/Chrome/Titanium Plating, Brushing, Painting, Powder Coated, Passivation, Electrophoresis, Electro Polishing, Knurl, Laser/Etch/Engrave etc. |
| | ±0.002 ~ ±0.005mm |
| | Min Ra 0.1~3.2 |
| CERTIFICATE | ISO9001:2015,AS9100D,ISO13485:2016,ISO45001:2018,IATF16949:2016,ISO14001:2015,ROSH,CE etc. |
FAQ
1. Are you a manufacturer or a trading company?
We are a factory located in Shenzhen, China, with 20 years of rich experience,
covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.
2. How to get a quote?
Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.
3. Can I get a quotation without drawings?
Can your engineering team draw for my creativity? Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.
4. Can you provide samples before mass production?
Of course, the sample fee is necessary. If possible, it will be returned during mass production.
5. What is the delivery date?
Generally, the sample lasts for 1-2 weeks and the batch production lasts for 3-4 weeks.
6. How do you control quality?
(1) Material Inspection - Check material surfaces and approximate dimensions.
(2) First inspection of production - ensure
critical dimensions in mass production.
(3) Sampling inspection - check the quality before delivery to the warehouse.
(4) Preshipment inspection - 100% inspection by QC assistant before shipment.
7. After sales service team
If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.
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