Aluminium Alloy Casting
Vast specialises in aluminium alloy casting and precision machining, delivering components that combine lightweight performance with excellent strength and corrosion resistance. Our aluminium alloy castings are widely used in the automotive, aerospace, construction machinery, and industrial equipment sectors, where weight reduction, durability, and precision are critical.
With advanced investment casting processes and CNC machining capabilities, we ensure high dimensional accuracy, consistent quality, and customised solutions tailored to diverse industry requirements.
- Precision Investment Casting
- Flexible Weight Range: from 0.02 kg up to 120 kg.
- Custom Solutions: meet the requirements of diverse industries
What is Aluminium Alloy Casting?
Aluminium casting is a process method to melt aluminium, pour it into a mould, and form the required shape of aluminium parts by cooling. The aluminium used for casting is called casting aluminium alloy.
It is a process method in which pure aluminium or aluminium alloy ingots are prepared according to the standard composition ratio, then turned into aluminium alloy liquid or a molten state by artificial heating, and then poured into the cavity by a professional mould or corresponding process and formed into the required shape of aluminium parts by cooling.
Advantages of Aluminium Alloy Casting
Lightweight with High Strength
Aluminium alloy castings offer an excellent strength-to-weight ratio, making them ideal for applications where reducing weight without compromising strength is critical, such as automotive and aerospace.
Corrosion & Oxidation Resistance
With natural oxide layers and alloying elements, aluminium castings provide outstanding resistance to rust, oxidation, and environmental exposure, extending component life in demanding conditions.
Excellent Thermal & Electrical Conductivity
Aluminium alloys deliver superior heat dissipation and electrical conductivity, making them well-suited for applications in energy, electronics, and automotive cooling systems.
Versatility in Applications
Aluminium alloy castings can be tailored for a wide range of industries — from automotive, aerospace, and construction to electronics and industrial equipment — providing both design flexibility and cost efficiency.
Aluminium Alloy Casting Material Table
Alloy Grades | Alloy code | Major elements (mass fraction) (%) | ||||||
Si | Cu | Mg | Zn | Mn | Ti | Al | ||
ZAlSi7Mg | ZL101 | 6.5~7.5 | 0.25~0.45 | Residuals | ||||
ZAlSi7MgA | ZL101A | 6.5~7.5 | 0.25~0.45 | 0.08~0.20 | Residuals | |||
ZAlSi12 | ZL102 | 10.0~13.0 |
| Residuals | ||||
ZAlSi9Mg | ZL104 | 8.0~10.5 | 0.17~0.35 | 0.2~0.5 | Residuals | |||
Our Value-Added Services Beyond Aluminium Alloy Casting
At Vastcast, we provide more than just aluminium alloy castings — we deliver a full suite of value-added services to enhance performance, durability, and precision. Our comprehensive post-processing ensures that every component meets the highest industry standards and your exact project requirements.
🛠 Precision CNC Machining
High-accuracy milling, turning, drilling, and threading for complex alloy steel parts.✨ Surface Finishing
Grinding, polishing, and shot blasting to achieve optimal surface quality and dimensional accuracy.🎨 Coating & Treatment
Protective coatings such as painting, plating, and passivation to improve corrosion and wear resistance.🔥 Heat Treatment
Normalising, quenching, tempering, and annealing to optimise hardness, strength, and toughness.
Aluminium Alloy Casting FAQs
Aluminium alloy castings are lightweight yet strong, with excellent corrosion resistance, good thermal and electrical conductivity, and high design flexibility. These properties make them ideal for industries such as automotive, aerospace, electronics, and construction.
We can produce castings from 0.02 kg up to 120 kg, depending on the design and complexity. Our advanced investment casting processes allow us to achieve both small precision components and large structural parts.
Aluminium alloy castings are widely used in automotive (engine and chassis parts, lightweight structures), aerospace (aircraft components), electronics (housings and heat sinks), construction machinery, and industrial equipment where weight reduction and corrosion resistance are critical.
We offer a wide range of finishing and machining options, including CNC machining, anodising, powder coating, polishing, and heat treatment. These processes enhance surface quality, durability, and overall performance of the final component.
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