Properties of Different Aluminum Grades
Different aluminum grades offer distinct mechanical and physical properties, all CNC machining-optimized to meet your application’s specific strength, corrosion resistance, or durability needs.
| Aluminum Grade | Density (g/cm³) | Tensile Strength (MPa) [T6 Temper] | Yield Strength (MPa) [T6 Temper] | Elongation at Break (%) | Max Service Temp (℃) | Hardness (HB) | Corrosion Resistance |
|---|---|---|---|---|---|---|---|
| 1100 | 2.71 | 110-130 | 35-50 | 20-25 | 150 | 23-28 | Good |
| Key Features: High purity, easy machining, no stress cracking risk | |||||||
| 5052 | 2.68 | 230-260 | 190-210 | 12-15 | 175 | 60-70 | Excellent (Seawater resistant) |
| Key Features: Medium strength, fatigue-resistant, minimal weld distortion | |||||||
| 6061 | 2.70 | 290-310 | 240-260 | 10-12 | 200 | 75-85 | Good |
| Key Features: Balanced performance, high dimensional stability, strength adjustable | |||||||
| 6063 | 2.70 | 240-260 | 200-220 | 12-14 | 180 | 65-75 | Good |
| Key Features: Low impurity, high surface finish, ideal for anodizing | |||||||
| 7075 | 2.81 | 540-580 | 480-510 | 8-10 | 120 | 150-160 | Moderate (Requires corrosion protection) |
| Key Features: Aerospace-grade strength, controlled cutting speed required | |||||||
| 2024 | 2.78 | 470-500 | 320-350 | 10-12 | 120 | 120-130 | Poor (Requires protection) |
| Key Features: High shear strength, post-machining stress relief needed | |||||||
| 5083 | 2.66 | 300-330 | 210-240 | 15-18 | 175 | 80-90 | Excellent |
| Key Features: High corrosion resistance, suitable for marine applications | |||||||
Applications of CNC Machined Aluminum Parts
Surface Finishing Options for Aluminum
Anodizing
Applicable to aluminum and aluminum alloys, the anodizing process significantly enhances the surface hardness (HV300-800) and salt spray resistance of components, while being dyeable to meet aesthetic requirements across multiple industries.
Powder Coating
Powder coating for aluminum, boasting core advantages of over 95% paint utilization rate and exceptional weather resistance (with an outdoor service life of more than 15 years), delivers dual decorative and protective functions through a straightforward process, making it the preferred choice for both commercial and industrial applications.
Electrophoretic Coating
Aluminum electrophoretic coating, catering to high-end requirements across diverse industries, combines decorative and protective properties with a coating that bonds tightly to the substrate and resists peeling, making it widely utilized in bathroom hardware, mid-frames for electronic devices, and other products.
Passivation
The passivation technology suitable for precision CNC aluminum components enhances corrosion resistance without compromising dimensional accuracy or appearance, and is widely utilized in high-end sectors such as electronics and automotive.
Cost-saving Design Tips
To cut costs while making aluminum alloy parts, first use DFM principles—don’t add features that are hard to machine.