Automotive electronic fans are usually made of the following materials:

1. Blades: The blades of automotive electronic fans are usually made of plastic materials, such as glass fiber reinforced plastics or polypropylene. These materials have the characteristics of light weight, high temperature resistance and wear resistance, which can ensure that the blades have good durability and stability when rotating at high speed.

2. Shell: The shell of the electronic fan is usually made of metal, such as aluminum alloy or galvanized steel plate. These materials have good heat dissipation performance and strength, and can effectively protect the motor and other key components inside the electronic fan.

3. Motor: The motor of electronic fan usually adopts copper wire winding and iron core structure to ensure that the motor has good electrical conductivity and magnetic permeability, so as to provide enough power to drive the fan blades to rotate.

4. Control module: The control module of electronic fan usually adopts high-temperature resistant electronic components and plastic casing to ensure the stable operation of the control module in high-temperature environment and accurately control the start, stop and speed of the fan.

Generally speaking, the materials of automotive electronic fans are mainly plastic, metal and electronic components. These materials have the characteristics of high temperature resistance, wear resistance and good conductivity, which can ensure the stable and reliable operation of electronic fans in various working environments. Choosing the right material has an important influence on the performance and life of electronic fans, so it is necessary to fully consider the selection and collocation of materials in the design and manufacturing process.