MATERIAL EXPERTISE
Aluminum CNC Machining
We provide high-precision aluminum CNC machining services for prototypes and small-batch production. With excellent machinability and lightweight properties, aluminum is one of the most popular materials for custom parts.
Trusted by industry leaders
Why Choose Aluminum for CNC Machining?
At 6CNC, aluminum is one of our most frequently machined materials. It offers an excellent strength-to-weight ratio, superior machinability, good thermal and electrical conductivity, and natural corrosion resistance.
With low density (~2.7 g/cm³) and fast cutting speeds, aluminum helps reduce part weight while lowering machining time and cost. It is ideal for complex geometries and tight-tolerance components.
We support a wide range of aluminum alloys and provide one-stop machining + surface finishing services to meet your functional and appearance requirements.
Popular Aluminum Alloys We Machine
Compare the material around strength, corrosion resistance, forming, finishing and the specified stock condition.
Aluminum 6061 / 6061-T6
The most versatile general-purpose alloy. It delivers excellent machinability, weldability, and corrosion resistance with good strength. Widely used for structural parts, frames, electronic enclosures, automotive components, and prototypes.
Aluminum 5052
Excellent corrosion resistance, especially in marine and chemical environments. Good formability and fatigue strength.
Aluminum 5083
High strength combined with superior corrosion resistance. Commonly used in shipbuilding, pressure vessels, and marine equipment.
Aluminum 7075 / 7075-T6
High-strength aerospace-grade alloy with excellent fatigue resistance. Suitable for high-stress applications such as aircraft fittings, military equipment, robotics, and performance automotive parts.
Aluminum 6082
Similar to 6061 but offers slightly higher strength. Popular for structural applications and heavy-duty frames.
Aluminum 2024
High-strength alloy with excellent fatigue resistance. Often used in aerospace and precision mechanical parts.
| Typical property | 6061-T6 | 7075-T6 |
|---|---|---|
| Yield strength | ~276 MPa | ~503 MPa |
| Density | 2.70 g/cm³ | 2.81 g/cm³ |
| Brinell hardness | 95 | 150 |
6061-T6 and 7075-T6 properties above are typical reference values. Product form, thickness and material condition affect the result; use the applicable specification and stock certificate for design.
Surface Finishes for Aluminum Parts
Enhance durability, appearance, and functionality with these options:
As Machined
Clean surface directly from CNC machining. Maintains the tightest tolerances. Cost-effective choice when appearance is not critical.
Anodizing (Type II & III）
Creates a hard, protective oxide layer that significantly improves corrosion and wear resistance. Can be dyed in various colors (black, red, blue, gold, etc.).
• Type II: Standard anodizing
• Type III: Hard anodizing (thicker, more durable)
Sandblasting / Bead Blasting
Produces a uniform, matte, non-reflective surface. Removes machining marks and creates a consistent texture. Often used before anodizing.
Powder Coating
Durable, high-quality colored finish with excellent corrosion protection. Wide range of colors and textures available. Ideal for outdoor or high-visibility parts.
Polishing / Brushing
Achieve high-gloss mirror finish or elegant brushed satin look. Great for consumer electronics, medical devices, and decorative components.
Other Finishes
Painting, Chromate Conversion Coating (Alodine), Electroplating, Clear Coating, Laser Engraving, etc.
Aluminum CNC Machining Capabilities at 6CNC
| Capability | 6CNC scope |
|---|---|
| Processes | 3-axis, 4-axis and 5-axis CNC milling; CNC turning and mill-turn machining |
| Tolerance capability | Up to ±0.002 mm, subject to material, geometry, feature and inspection review |
| Part size | Up to 2000 mm; machining access and part configuration reviewed at quotation |
| Inspection | ZEISS & Hexagon CMM; full inspection reports available |
| Engineering support | DFM feedback included with every quote |
| Production range | 1–600 pcs |
| Prototype lead time | 1–7 days, depending on complexity, material, finishing and quantity |
Capabilities are based on 6CNC’s existing service scope. Final tolerances, part size and delivery are confirmed against your drawing and project requirements.
Applications
Our aluminum CNC machined parts are widely used in:
- Robotics and automation equipment
- Medical devices and instruments
- New energy vehicles and battery housings
- Aerospace and drone components
- Marine equipment
- Electronics enclosures and heatsinks
- Industrial machinery and fixtures
Why Choose 6CNC for Aluminum Parts?
- 10+ years of precision CNC machining experience
- 140+ advanced CNC machines
- Focus on prototypes and small-batch production
- No minimum order quantity
- Fast quotation within hours
- One-stop solution: machining + finishing + assembly
- Reliable quality and on-time delivery
We help engineers, OEMs, and product teams reduce risk, control costs, and bring designs to life with confidence.
Ready to start your aluminum project?
Upload your CAD files (STEP, IGES, etc.) today. Our team will review your design and send you a quote with DFM feedback shortly.
Related reading: Aluminum Anodizing Types Explained