When it comes to plastic fan blades and metal fan blades for shaded pole motors, each has its own advantages and disadvantages. Here are the general characteristics of each:

Advantages of plastic fan blades:

1. Low cost: Plastic fan blades typically have lower manufacturing costs compared to metal fan blades.

2. Lightweight: Plastic is a lightweight material, so plastic fan blades have an advantage in reducing equipment weight.

3. Corrosion resistance: Plastic fan blades have good resistance to general corrosive environments and are less susceptible to oxidation or corrosion.

4. Insulating properties: Plastic has good insulating properties, making it suitable for applications that require insulation.

5. Processability: Plastics are easy to process into complex shapes and structures, providing flexibility in the production process.

Disadvantages of plastic fan blades:

1. Strength limitations: Plastic fan blades have lower strength compared to metal fan blades and may not be suitable for high-load and high-speed applications.

2. Limited wear resistance: Plastic fan blades generally have poor wear resistance and may require more frequent maintenance and shorter lifespan.

3. Temperature limitations: Plastic materials are usually sensitive to high temperatures and may deform or fail in high-temperature environments.

Advantages of metal fan blades:

1. High strength: Metal fan blades typically have high strength, making them suitable for high-load and high-speed applications.

2. Wear resistance: Metal fan blades have good resistance to wear and friction, resulting in longer lifespan.

3. High temperature resistance: Metal materials can maintain stable performance in high-temperature environments without deformation or failure.

Disadvantages of metal fan blades:

1. Higher cost: Metal fan blades generally have higher manufacturing costs compared to plastic fan blades.

2. Heavier weight: Metal fan blades are relatively heavier, which may increase the weight burden of the equipment.

3. Corrosion sensitivity: Some metal fan blades may be sensitive to corrosive substances in specific environments, requiring additional corrosion protection measures.

When selecting fan blade materials, it is important to consider the application requirements, cost budget, and performance needs to find the optimal balance.