Views: 0 Author: Site Editor Publish Time: 2025-08-29 Origin: Site
Aluminum alloy and zinc alloy die casting are two common metal die casting processes, which have significant differences in material properties, castings performance and application fields. Therefore, choosing the right materials is crucial for the quality, performance and cost control of the parts.
I. Comparison of Material Properties
Aluminum Alloy (A380 ADC12 A383)
1. Low density: Aluminum alloy has a relatively low density, making it suitable for the parts that require light weight.
2. Excellent corrosion resistance: A natural oxide film forms on the surface, providing strong corrosion resistance.
3. Good thermal conductivity: Suitable for parts that require heat dissipation.
4. Compressive strength: Aluminum alloy has relatively high strength and hardness, but it is slightly inferior to zinc alloy.
Zinc Alloy (Zamak2 Zamak3 Zamak5)
1. Good fluidity: Zinc alloy has excellent fluidity during die-casting, making it suitable for manufacturing complex and fine castings.
2. Higher density: Compared with aluminum alloys, zinc alloys have a greater density and are suitable for parts that require higher stability and impact resistance.
3. Lower corrosion resistance: The surface of zinc alloy is prone to oxidation, and long-term use may lead to corrosion, but this can be improved through surface treatment.
4. High compressive strength: Zinc alloy has high mechanical strength and is suitable for products that bear greater pressure.
Properties | Aluminum Alloy | Zinc Alloy |
Density | lower（about2.7 g/cm³） | higher（about6.6 g/cm³） |
Strength | Medium strength and can be enhanced by heat treatment | High strength, hardness superior to aluminum alloy |
Melting point | higher（about660°C） | lower（about385-420°C） |
Corrosion resistance | Excellent (oxide film forms on the surface) | Poor (requires surface treatment for rust prevention) |
Thermal conductivity/ electrical conductivity | excellent | average |
II. Differences in the Application of Aluminum Alloy and Zinc Alloy Die Casting
Aluminum Alloy Die castings
1. Automotive industry:aluminum alloys are widely used in the manufacturing of automotive parts due to their lightweight and corrosion-resistant properties, such as engine components, body frames, radiators, etc.
2. Electronic products: Aluminum alloy is widely used in electronic products such as mobile phone and computer casings, featuring excellent heat dissipation and oxidation resistance.
3. Aerospace: Due to the light weight and high strength of aluminum alloys, they are widely used in the aerospace field, such as aircraft components, etc.
Zinc Alloy Die castings
1. Electronics and electrical industry: zinc alloys are often used in the casings, joints, connectors and other components of electronic and electrical products, which can provide higher strength and hardness.
2. Home hardware: Zinc alloys are also widely used in areas such as door locks, window accessories, and home appliance hardware, providing better stability and durability.
3. Tools and mechanical parts: Due to its high strength and good castability, zinc alloys are suitable for the manufacturing of small mechanical parts and tools.
III. Conclusion
Aluminum alloy and zinc alloy each have their own advantages and disadvantages and are suitable for different application scenarios. Zinc alloy has advantages in fluidity and surface quality, making it suitable for precision parts. Aluminum alloy is lighter and more corrosion-resistant, making it suitable for large-sized or structural components. Based on the specific demands, performance requirements and cost budget of the product, the reasonable selection of appropriate alloy materials can ensure the quality, functionality and market competitiveness of the parts.
