Types of Auto Castings in Automobile Manufacturing Industry

Manufacturing processes for casting parts in automobiles are constantly evolving. The demand for innovative & efficient automobile casting components is also rising with the shift to electric vehicles. In this article, we will talk about the extensive applications of casting parts in two major types of vehicles, casting for four-wheel vehicles & two-wheel vehicles. We will also explore the diverse methods of steel casting and their applications in these fields. Specifically, we will learn some popular automobile casting components in each section with their advantages and disadvantages. Let’s explore.

I. Introduction To Casting Components In The Automobile Industry

Casting components in automobiles are crucial metal parts. They may come from different casting manufacturing methods. We can obtain auto castings in five popular ways. They are die-casting, investment casting, centrifugal casting, shell mold casting, and continuous casting. Note that steel is the primary material used in these methods, with aluminum following behind.

The die-casting method yields complex shapes with high precision. On the other hand, investment casting is ideal for intricate designs. Centrifugal casting is primarily suitable for hollow parts, and shell mold casting is for large components. Finally, continuous casting is for long strip parts. All these casting methods ensure the versatility of steel component manufacturing.

As said earlier, vehicle development trends are crucial in the modern auto casting industry. In this industry, we can find two major types of vehicles: gasoline and electric. Electric cars offer various benefits to gasoline vehicles. They reduce reliance on fossils and advancements in battery technology. Besides, electric cars also provide superior efficiency, costs, and a green environment. As a result, EV cars & bikes are the better choice than gasoline vehicles.

China is in a dominant position upstream of the tram industry chain. According to Statistica, China’s electric car market is predicted to generate US$292.1bn in 2023. The country has established itself as a global leader by developing an extensive automobile supply chain.


II. Application Of Casting In Four-Wheel Automobile Parts Manufacturing

Four-wheel automobiles have a wide variety based on specific needs & preferences. Some popular four-wheel automobiles include sedans, SUVs, coupes, pickup trucks, EVs, luxury cars, and many more. These are just a few examples. However, within each category, there can be further subtypes & variations.

1. Aluminum Alloy Die Casting Process (Die Casting)

Aluminum die casting is a precision metal casting process. It involves injecting molten aluminum alloy into a steel mold under high pressure. This method is widely popular in manufacturing intricate and complex automobile parts. The aluminum die-casting method is famous for manufacturing efficient & high-precision auto castings.

a. Application Of Aluminum Alloy Die-Casting Process In Automobile Parts Manufacturing

Aluminum die casting finds extensive applications in the manufacturing of crucial auto castings components. These automotive castings contribute to the overall efficiency & performance of your vehicle. The following are some famous examples of aluminum die-casting auto parts. Note that all these components may come with intricate shapes. Therefore, the die-casting method is suitable for these aluminum alloy die-casting auto parts.

  • The engine block provides structural support to various engine parts.
  • The cylinder head is a crucial component of an internal combustion engine. It is located at the top of the engine block.
  • Transmission case housing is responsible for protecting the transmission system.
  • A brake caliper is essential to your vehicle’s braking system. The primary function of this component is to slow down or stop the car.

b. Advantages Of Aluminum Alloy Die-Casting Process In Auto castings Parts Manufacturing

The Aluminum Alloy die-casting process is a widely used casting method in the automobile industry. This method is so popular due to its few advantages. They are:

  • Thermal conductivity: Aluminum offers excellent thermal conductivity. It ensures effective heat dissipation. An engine block is a famous example in this case.
  • Complex shapes: The aluminum alloy die-casting process allows for the creation of complex shapes. As a result, these car casting parts meet the demanding design requirements.
  • High production efficiency: Aluminum alloy die-casting is a highly efficient process. As a result, they are suitable for mass production. In addition, this casting process ensures consistent quality and precision in mass production.
  • High precision & suitable for mass production: The method offers exceptionally tight tolerances. In addition, this method can also handle high volume. Both features make the aluminum alloy die-casting method suitable for mass production.

2. Shell Mold Casting Components In The Auto Castings Industry

Shell mold casting is a precision & expandable process that utilizes resin-covered sand to form the mold. This mold, also known as the shell, is typically made into two halves. Once the shell is prepared, it is assembled based on the different complexities of the final products. However, the process pours molten metal into the cavity formed by this shell. Later, the molten metal solidifies and turns into a desired metal casting.

a. Application Of Shell Technology In Automobile Parts Manufacturing

Shell mold casting components have extensive applications in manufacturing various automobile parts. This casting method is typically ideal for producing large metal components. The following are some famous examples of this kind.

  • Engine crankcases enclose the engine’s crankshafts, connecting rods and lower components. It provides protection support and serves as a reservoir for engine oil.
  • Crankshafts convert the reciprocating motion of the pistons into rotational motion.
  • Wheels are the circular metal components on which tires are mounted.
  • Transmission housings enclose transmission systems. The primary function of this component is to transfer power from the engine to the wheels.

b. Advantages Of Shell Technology In Automobile Parts Manufacturing

Shell mold casting is widely popular in auto castings parts manufacturing due to its numerous benefits. Shell mold casting components are favored for large, complex parts. Let’s explore some more benefits.

  • Suitable for large & complex parts: Shell mold casting is ideal for producing large auto castings parts. Famous examples include engine crankcases and wheels. The primary goal of these components is to ensure structural integrity and precision.
  • Highly flexible: Shell mold technology is highly flexible. It allows for the creation of complex part geometry. The process also ensures a high degree of accuracy.
  • Cost-Effective Production: Shell mold casting is a low-cost method. It minimizes material waste and energy consumption. It also provides efficient manufacturing for various automotive castings components.
    shell casting process

3. Centrifugal Casting Components In The Automobile Industry

Centrifugal casting is a specialized casting method. It pours molten metal into a rotating mold and creates centrifugal force. The force distributes the metal evenly and helps form cylindrical or tubular shapes as it solidifies. The uniqueness of centrifugal casting components lies in the force-driven shaping process.

a. Application Of Centrifugal Casting Process In Automobile Parts Manufacturing

The uniqueness of this method offers more reliable and efficient manufacturing of various auto castings parts. The following casting components find applications in crafting multiple automobile components.

  • The engine cylinder liner is one of the core components of an engine. It basically protects an engine against wear and tear. We can locate it fitted in the cylinder block, which directly touches the fuel combustion process.
  • The wheel hub bearing sleeve supports and facilitates smooth rotation of the wheel bearings. It contributes to the overall stability and performance of the vehicle’s wheel assembly.
  • Crankshaft sleeves enhance the strength and resilience of the crankshaft. It is also a critical engine component that converts piston motion into rotational power.

b. Advantages Of Centrifugal Casting Process In Automobile Parts Manufacturing

Centrifugal casting is a remarkable technology used in the automotive castings industry. Its unique process offers benefits crucial to crafting high-performance & durable components.

  • Preparation of hollow parts: Centrifugal casting is proficient in crafting hollow components. It may be pretty challenging for types of casting methods. The centrifugal casting process ensures a seamless blend of uniform thickness & structural robustness.
  • High strength: This method yields automotive castings parts with superior strength. You know it is a critical attribute for critical applications.

4. Investment Casting Components In The Automotive Castings Industry

Investment casting is one of the most popular methods for producing metal components. Usually, these metal components come with complex designs and intricate shapes. The process typically pours molten metal into a precision mold made of a ceramic shell, wax, or similar material. This process helps engineers to make detailed parts with high precision. This characteristic makes the investment casting methods different from other casting techniques.

a. Application Of Centrifugal Casting Process In Automobile Parts Manufacturing

Investment casting is applied in crafting vital steel-casting automobile components. Note that Investment casting components are used in many auto castings parts due to their intricate forms. The following are some famous examples of investment casting components in automobiles.

  • Turbine blades are vital components used in the turbine section of an engine. Investment casting ensures that these blades are manufactured precisely to optimize fuel efficiency.
  • Exhaust manifolds are another vital component in an internal combustion engine. It collects exhaust gases from multiple cylinders and directs them into a single pipe.
  • Braking system components may include various separate steel casting components. They are brake calipers, discs, and pads. Investment casting also ensures these auto castings parts’ high precision, reliability, and durability.

b. Advantages Of Centrifugal Casting Process In Automobile Parts Manufacturing

As mentioned, investment casting is considered the most popular metal casting method. Therefore, we can realize the importance of this manufacturing process in making many vital components.

  • High Precision: Investment casting can achieve intricate shapes with exceptional precision. This method ensures that the manufactured product meets strict automotive requirements.
  • Good Quality: Components produced through this method usually exhibit high-quality surface finishes. As a result, it contributes to overall product excellence.
  • Durability: Investment casting also results in durable parts. It ensures longevity and reliability in automotive castings applications.
  • Heat resistance: Investment casting components are extremely heat resistant. This qualifies them for crucial roles in braking systems and exhaust manifolds.
  • Compliance with material requirements: Investment casting is a high-precision production method. Therefore, these components ensure that they meet strict material requirements.

5. Continuous Casting Components In The Automobile Industry

Continuous casting, on the other hand, creates metal forms with an uninterrupted length. Molten metal is continuously poured into a mold during this operation. It solidifies as it passes through rollers or water-cooled molds. Some specialties of continuous casting can be observed compared to other methods. Since this method allows for the production of continuous length, it minimizes material waste. In addition, you don’t have to make separate parts.

a. Application Of Continuous Casting Process In Automobile Parts Manufacturing

Continuous casting has applications in making various automobile components. For example, helical gears, drive shafts, and other parts with extended lengths are noteworthy.

  • Helical gears are mechanical gear systems that transmit rotational motion between parallel shafts. Unlike spur gears, helical gears’ teeth are inclined to the axis of rotation.
  • Drive shafts are also known as propeller shafts. These are mechanical components used to transmit torque & rotation between the engine & wheels in your vehicle.

b. Advantages Of Continuous Casting Process In Automobile Parts Manufacturing

Continuous casting is renowned for producing various auto castings parts with extended lengths. Compared to other methods, it is a cost-effective method for making helical gears, drive shafts, and others.

  • Suitable for Producing Extended Parts: The method is ideal for efficiently making long-strip auto castings parts. The process typically minimizes the need for an additional joining process.
  • High Surface Precision: Continuous casting creates parts with high precision.

6. Precision Metal Casting In Elon Musk’s Cybertruck

We all are familiar with Tesla’s introduced Cybertruck, a remarkable creation in the history of automobiles. Cybertruck showcases the significance of metal casting in modern automotive innovations. You know, stainless steel is a durable and corrosion-resistant material. Consequently, we can also find the extensive use of steel casting components in cybertruck.

The body of Cybertruck is made from an ultra-hard 30X cold-rolled stainless steel alloy. We may find this material not only in cyber trucks but also in other automotive vehicles from Tesla. High-quality steel casting provides the Cybertruck with its distinctive exoskeleton. It combines both durability and aesthetics.

III. Application Of Casting In The Manufacturing Of Two-Wheeled Automobile (Motorcycle) Parts

Two-wheel automobiles are commonly referred to as motorcycles or e-bikes. Motorcycles are a type of two-wheel vehicle powered by an engine. On the other hand, e-bikes are also two-wheel vehicles powered by electric batteries. Well, these two types may also come with variations. For example, scooters, cruisers, choppers, and many more.

1. High-Pressure Casting (Die Casting) Components In Automobile Industry

High-pressure die casting is a precision and popular type of die casting method. The process injects molten metal into a mold under high pressure. Thus, the process is called the high-pressure die-casting method. This rapid injection allows for the exact production of detailed & complex parts. You may wonder about the difference between typical die casting and higher-pressure casting. Well, high-pressure casting is a subset of die casting. This method just involves higher injection pressure.

a. Application Of High-Pressure Die-Casting Technology In The Manufacturing Of Two-Wheeled Automobile Parts

High-pressure die casting is extensively used in creating components for two-wheeled automobiles. The following are some popular auto castings parts.

  • Engine casings are also known as engine housings. They are protective enclosures that house the internal components of an engine. Their primary function is to provide structural support & protection for crucial engine parts.
  • A brake caliper is a component in a vehicle’s braking system. It houses the brake pads and applies pressure to them. It causes them to clamp on top of the brake rotor. The result is a vehicle’s deceleration or stopping.
  • Transmission casings enclose the transmission system of a vehicle. They contain fears, shafts, and other components necessary for managing speed & torque.

b. Advantages Of High-Pressure Die-Casting Process In Manufacturing Two-Wheeled Automobile Parts

You know, The two-wheeled vehicle sector is changing through new manufacturing processes. Among all other casting methods, a high-pressure die-casting process is crucial in this case. Why did two-wheeled automobile parts demand a high-pressure die-casting process?

  • High production efficiency: Critical component manufacture is efficient using high-pressure die-casting.
  • Suitable for mass production: The method is usually designed for mass production. This method facilitates the creation of a large volume of components with consistent quality.
  • Parts with complex shapes: Two-wheeled vehicles often feature intricate & aesthetically complex designs. The high-pressure process, in this case, plays a crucial role in realizing these modern design requirements.
  • High surface accuracy & density: High-pressure die-casting produces parts under high pressure. As a result, using this method, we can create high surface accuracy & density.
  • Save materials & reduce component weight: This process is also known for its material efficiency. It minimizes waste and contributes to sustainable manufacturing.

2. Rotation Casting (Low-Pressure Casting) Components In Automobile Industry

Rotation casting is also famous for low-pressure casting, a type of centrifugal casting. The process involves a rotating mold into which molten metal is poured. The centrifugal force generated by the rotation spreads the metal evenly. It results in the creation of hollow cylindrical or round parts. In this casting method, the use of rotation force distinguishes it from other casting methods.


a. Application Of Rotation Casting Process In Manufacturing Of Two-Wheeled Automobile Parts

Rotating casting finds significant application in the production of components for two-wheeled automobiles. The most popular products we can consider are Aluminum Alloy wheel hubs. The rotation casting method ensures the creation of wheel hubs that are durable, precise, and intricate shapes. Indeed, the high-quality casting contributes to the overall performance & aesthetics of your vehicles.

b. Advantages Of The Rotation Casting Process In The Manufacturing Of Two-Wheeled Automobile Parts

Choosing the correct casting methods is crucial in the two-wheeled automobile manufacturing industry. You know, it plays a vital role in defining the quality, strength, and precision of critical components. Let’s check some widespread benefits of the rotation casting process.

  • Higher metal density: Rotation casting offers components with higher metal density. It enhances their strength & durability.
  • Uniformity: The centrifugal force ensures even metal distribution. As a result, it contributes to uniformity in the composition and structure of the cast parts.
  • Rotation casting is ideal for manufacturing large, thin-walled parts. A popular example includes wheel hubs.
  • The rotation casting method also provides high production efficiency.
  • High-precision parts: The method creates high-precision parts. These auto parts can meet the stringent requirements of modern two-wheeled automobile designs.Die Casting

3. Sand Casting Components In The Auto Castings Industry

Sand casting is a versatile and traditional casting method. In this process, molten metal is poured into a mold made of compacted sand. It is a popular method due to its simplicity, versatility, and cost-effectiveness. The sand casting method is widely used in producing a wide range of auto parts with various sizes & complexities.

a. Application Of Sand Casting Process In Manufacturing Of Two-Wheel Automobile Parts

Sand casting finds extensive use in the manufacturing of components for two-wheeled automobiles. Some popular sand-casting steel-casting parts are discussed below.

  • Steel casting frame: Sand casting creates durable and robust two-wheeler frames. These steel-casting parts ensure the structural integrity of the motorcycles and e-bikes.
  • Some car iron parts: Two-wheeled cars use cast iron elements for structural strength and functionality. Some popular car iron parts are frame elements, suspension components, and many more.

b. Advantages Of Sand Casting Process In Manufacturing Two-Wheel Automobile Parts

The sand casting method is also famous for its unique advantages. This traditional method is still practised in many industries due to these benefits.

  • Suitable for making large parts: Sand casting produces large components.
  • Cost-effective: The simplicity of this method makes the process cost-effective.
  • Suitable for small batch production: Sand casting is adaptable to small batch production. It offers flexibility in manufacturing quantities.
  • Complex-shaped parts: The sand casting method also offers complex-shaped parts with high precision.


To wrap up the discussion, steel casting is crucial in manufacturing high-quality auto parts. They serve as the backbone of shaping four-wheel and two-wheel vehicles with precision & durability. Four-wheel auto parts include engine blocks, transmission cases, brake calipers, and many more. On the other hand, two-wheel auto parts have engine casing, aluminum alloy wheel hubs, and many more. These precision components play crucial roles in the overall performance of vehicles. Therefore, we cannot ignore the importance of steel casting in manufacturing these auto parts.

Choosing quality castings from reputable manufacturers is also paramount. Why? Because you can guarantee product precision and quality. Dawang Casting stands as a trusted partner. They are one of the leading steel casting manufacturers in the world. This brand assures its customers of precision, durability, and a commitment to deliver the best quality products. For more information, feel free to contact us.