Plastic CNC Machining Parts

Lightweight: Plastics are generally lightweight, with the heaviest plastic, PTFE (Polytetrafluoroethylene), having a density of only 2.2 g/cm³. This property makes them ideal for applications where low weight is essential for part functionality and efficiency.

Elasticity: Most plastics can return to their original shape after deformation. This property varies by plastic type and is very high in elastomers. It allows plastic parts to bend, undergo stress, and deform without breaking.

Corrosion and chemical resistance: Plastics are resistant to various chemicals, making them ideal for parts in harsh chemical environments.Plastics do not rust or corrode, as these are chemical processes exclusive to metals.

Wear and tear resistance: Many plastics are wear and tear-resistant, making them suitable for applications where durability is crucial. Certain plastics, like Nylon (PA), Delrin (POM), and Polyethylene, are known for their excellent wear resistance, low friction, and ability to withstand repeated mechanical stress.

Impact resistance: Plastics' elasticity makes them resistant to impact. This property varies between plastics, but elastomers typically have the highest impact resistance.

Recyclability: Many plastics can be recycled, helping reduce waste and environmental impact. Thermoplastics, in particular, can be remelted and reshaped multiple times, contributing to sustainability efforts.

Electrical Insulation: Plastics are generally excellent electrical insulators due to their high resistivities. This property facilitates safe interaction between electrically conductive components.

Optical properties: Plastics have both transparent and opaque options at varying levels. Polymers' interaction with light depends on various factors, including crystallinity, additives, and the synthesisation process. Transparent plastics include PS, ABS, acrylic, PC, and PEI. Plastics are also very receptive to pigments and dyes and can be synthesised in countless colours.

Thermal insulation: Due to their atomic structures and lack of free-moving electrons, plastics are poor conductors of heat. Some plastics are also heat resistant, with polybenzimidazole capable of withstanding temperatures above 500⁰C. Other heat-resistant plastics include PEI , PEEK, and PTFE (Teflon), with melting points of 219°C, 371°C, and 327°C, respectively.

Biocompatibility: Certain plastics, such as PEEK and medical-grade silicones, are biocompatible, meaning they can be safely used in contact with biological tissues, making them suitable for medical devices and implants.

Durability: Plastics can last very long periods as they hardly scratch, are impact-resistant, resistant to wear and tear, cannot corrode, and are resistant to many chemicals. Note that the durability of different plastics varies under different conditions.