The characteristics of plastic machining parts:

1. Lightweight: Plastics are lighter than metals, so plastic machining parts usually have a lower weight, which helps reduce the overall load of the structure.
2. Corrosion Resistance: Many plastics have high resistance to chemicals and corrosion, making them perform well in corrosive environments.
3. Ease of Machining: Plastics are generally easier to machine and can be processed using various techniques such as cutting, milling, and turning.
4. Electrical Insulation: Most plastics have excellent electrical insulation properties, suitable for applications requiring electrical isolation.
5. Good Surface Finish: Plastic machining parts often have a smooth surface, making it easier to achieve high surface quality standards.
6. Cost-Effectiveness: Plastics are usually less expensive than metals, especially in large-scale production, where cost efficiency is more apparent.
7. Heat Resistance: The heat resistance of plastics varies; some plastics can maintain stability at high temperatures, while others may deform or melt easily.
8. Strength and Rigidity: Although plastics generally are not as strong as metals, with the right material selection and machining methods, they can meet strength and rigidity requirements for many applications.
9. Color and Transparency: Plastics can be easily dyed or made transparent, meeting various aesthetic requirements.

These characteristics make plastics a popular choice in many applications, especially where lightweight, corrosion resistance, and good insulation properties are needed.