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Aluminum Die Casting
Aluminum Alloy Die Casting and Machining

Yi Rong has been dedicated to aluminum die casting, aluminum alloy forming, development, and manufacturing for many years.
We adhere to ISO quality processes and strive to be the best OEM partner.

Aluminum Alloy Die Casting Process

Aluminum Die Casting
Aluminum Alloy Die Casting and Machining

Yi Rong is a high-quality supplier of aluminum alloy die castings committed to providing customers with high-quality products and excellent services. We follow the four principles of Safety, Quality, Efficiency, and Service, confirming customer requirements and discuss castability. We proceed with mold design, production, and PPAP, leading to mass production and subsequent processing to ensure that the products meet customer needs. Additionally, we offer a complete one-stop solution, including die casting design, casting and CNC machining, precision machining, assembly, and logistics, simplifying the entire supply chain process and maintaining high-quality products. We are committed to providing comprehensive services, allowing customers to enjoy efficient, convenient, and high-quality manufacturing experiences. Our factory specializes in the production of aluminum die castings capable of manufacturing products with various complex shapes.

What is Aluminum Die Casting?

In the die casting process, metal is first melted in a furnace and then injected into a mold under high pressure. The metal cools and solidifies within the mold.
We provide small, medium, and large die castings with machine sizes ranging from 150 tons to 900 tons.
The types of aluminum alloy materials used include::

  • A356.2
  • A360
  • ADC6
  • A380
  • ADC12
Aluminum alloy characteristics in material selection for die casting processing:

Aluminum die castings are lightweight and can withstand the highest operating temperatures of all die-cast alloys. They possess strength, rigidity, as well as good corrosion resistance and heat dissipation characteristics, making aluminum die castings a significant advantage for mechanical designers. Aluminum die casting molds have a shorter lifespan (approximately 80,000 cycles on average) and higher tooling costs compared to zinc alloys.

Advantages of Aluminum Alloy Die Casting:
  1. Lightweight: Aluminum alloy has a density approximately one-third that of steel, making it lightweight and suitable for products requiring lightweight design.
  2. Corrosion Resistance: Aluminum alloy has high corrosion resistance and is not easily oxidized or corroded, making it commonly used in applications such as marine, aerospace, and automotive industries.
  3. High Conductivity: Aluminum alloy has excellent electrical conductivity, making it suitable for applications that require high conductivity.
  4. Thermal Conductivity: Aluminum alloy has good thermal conductivity, allowing it to quickly transfer heat to other materials, making it commonly used in applications such as heat sinks.
  5. Processability: Aluminum alloy is highly processable and can undergo various processing methods such as die casting, forging, and turning.
  6. High Strength: Aluminum alloy has higher strength than general alloy steel, making it useful in applications that require high strength and low weight.
  7. Wear Resistance: Aluminum alloy has excellent wear resistance, making it useful in applications that require high wear resistance.
  8. Plasticity: Aluminum alloy can be manufactured into various shapes and sizes, making it highly versatile.
  9. Non-toxic: Aluminum alloy is a non-toxic material that is environmentally friendly and safe for human health.
Aluminum alloy materials commonly used in die casting and their material characteristics:

This alloy has characteristics such as heat brittleness, corrosion resistance, and oxidizable coloring. It has higher corrosion resistance than ADC12 due to its higher magnesium content. External components can be made of ADC6 for high-quality anodized surface treatment. It is applied in bicycle parts, direction indicator retainers, direction indicators, pedals, clutches, muffler brackets, pistons, crankcases, signal lights, brake levers, etc.


This is one of the most commonly used aluminum alloy specifications. It has good thermal conductivity and is easy to process. It has excellent flowability and tight pressure characteristics. It is also resistant to high temperatures and has strong crack resistance. It can be used in various products such as electronic equipment chassis, engine brackets, gearbox housings, furniture, electric and manual tools, and more.


Also known as JIS (Japanese Industrial Standard) aluminum alloy No. 12, it has excellent thermal conductivity (heat dissipation), is easy to cast, and exhibits good mechanical properties and dimensional stability, as well as better corrosion resistance. Commonly used in products such as cylinder heads, brackets, engine blocks, motor casings/covers, LED lights, radiators, electronic products, and more.


This is an Al-Si series casting alloy widely used in factories. It has excellent casting performance, heat treatment performance, processing performance, fatigue performance, and high strength. It is suitable for thin-walled parts and areas requiring pressure resistance. It can be used in products such as housings, aircraft pump components, aircraft joints, automotive transmissions, pulleys, fuel tanks, high-heat stress-supporting components, and other mechanical tool parts.

In summary, when selecting die casting materials, engineers should consider factors such as the product’s functional performance, skill performance, production conditions, economy, and the characteristics of the die casting materials. By considering these factors, they can make a rational and appropriate selection of die casting materials.

Table of aluminum alloy composition, mechanical properties, and coefficients for die casting materials:
Composition Table
Production Process

1. Confirm customer requirements and discuss the castability of aluminum castings with the customer.

Leading the industry in aluminum casting

We require potential customers to provide 2D drawings and 3D CAD models for technical review.
If additional casting machining is required, we also need the design patterns for machining.
This discussion and technical review process can confirm the castability of the desired forgings and ensure that the castings meet customer requirements.


2. Mold prototype design, production, and confirmation.

Aluminum casting mold flow analysis,3D printing production

After confirming the design patterns, mold flow analysis is used to simulate and refine the design, predicting the manufacturing aspects of the molds. Through mold flow analysis, we can quickly evaluate the mold design and identify and resolve potential issues, thereby improving product quality and production efficiency.
Designing castings is a specialized skill. Die-cast parts require specific characteristics such as draft angles, uniform wall thickness, and avoidance of undercuts and isolated heavy cross-sections. If you collaborate directly with our team before the design phase, all these issues can be easily overcome.
Currently, due to advances in technology, products are sometimes 3D printed for reference.


3. Mold production.

Precise measurement on the crankshaft
Mold manufacturing

Once the mold model design is confirmed, reusable die-casting molds can be produced.


4. Die-casting production.

Mold testing, customer confirmation of samples

The molds are used for production, and the produced products are submitted to the customer for confirmation.
After obtaining sample confirmation from the customer, the process proceeds to mass production.


5. Mass production

Melting aluminum ingots and automatic casting of die-castings

Yi Rong provides customers with die-casting capabilities ranging from 150 to 900 tons, capable of producing small to large aluminum alloy castings.
After melting the aluminum ingots, an electrolytic furnace is used, which offers high melting efficiency, excellent heat preservation, precise and stable aluminum liquid temperature, and minimal aluminum oxide formation.


6. CNC machining/surface treatment.

Yi Rong welcomes customers to provide various customizations

In addition to aluminum casting/pressure casting/vacuum casting, we also provide CNC machining and various surface treatment techniques such as sandblasting, electroplating, heat treatment, baking paint, etc., to meet customer requirements for product appearance and performance.