Home » What is Polyethylene (PE)?

What is Polyethylene (PE)?

Polyethylene (PE) is a versatile polymer derived from the polymerization of ethylene, known for its wide range of applications. It is one of the most common types of plastics, available in different forms such as low-density polyethylene (LDPE) and high-density polyethylene (HDPE), each offering different properties. PE is characterized by its excellent chemical resistance, flexibility, durability, moisture resistance, and low weight. It is also relatively low-cost and non-conductive, which adds to its versatility.

Polyethelene (PE) Precision Plastic Balls - High Performance Polymer-Plastic Fastener Components

Polyethylene fasteners and precision balls

As a material for fasteners, PE is well-suited for specific applications, particularly in environments where traditional metal fasteners might corrode or degrade due to chemical exposure or moisture. Its resistance to chemicals and corrosion makes it ideal for marine, chemical, or outdoor environments, while its non-conductive nature benefits electronic applications. However, due to its lower strength and rigidity compared to metal fasteners, PE fasteners are typically limited to light-duty applications.

PE is also suitable for precision balls in applications requiring lightweight, non-corrosive, and low-friction components. PE precision balls can be used in bearings or valves where chemical resistance and low moisture absorption are critical. While they do not offer the high strength of metal or ceramic balls, their resistance to wear and chemicals, along with their smooth surface, makes them an excellent choice for applications requiring lightweight, non-metallic solutions.

PE Precision Balls

High Performance Polymer offer a range of PE precision balls. Find out more by selecting a product below:

Polyethelene (PE) Precision Plastic Balls - High Performance Polymer-Plastic Fastener Components
High Performance Polymer

Polyethylene (PE) Precision Plastic Balls

In stock
From $0.26 NZD / each Ex. VAT
Polyethylene (PE) - High Performance Polymer-Plastic Fastener Components

Polyethylene (PE)

Introduction

In the world of fasteners, screws, nuts, bolts, and washers play an indispensable role. These seemingly small components are the unsung heroes of countless industries, providing the mechanical stability required for everything from construction and automotive assembly to electronics and medical devices. While traditional fasteners have typically been made from metals like steel or aluminum, an alternative material has gained prominence in recent years: polyethylene. In this article, we'll explore the use of polyethylene screws, nuts, bolts, and washers in various industries, highlighting their advantages and applications.

The Advantages of Polyethylene Fasteners

Polyethylene, a thermoplastic polymer, possesses several qualities that make it an attractive choice for fasteners in many applications:

  1. Corrosion Resistance: Unlike metal fasteners, polyethylene is inherently corrosion-resistant, making it ideal for use in environments where exposure to moisture, chemicals, or salt is a concern. This corrosion resistance ensures longevity and reliability.

  2. Lightweight: Polyethylene is significantly lighter than most metals, reducing the overall weight of assemblies. This is especially crucial in industries where weight savings are a priority, such as aerospace and automotive manufacturing.

  3. Insulating Properties: Polyethylene is an excellent electrical insulator, which is advantageous in applications where electrical conductivity must be avoided or minimized.

  4. Low Friction Coefficient: Polyethylene has a low friction coefficient, meaning it reduces friction and wear between moving parts, making it suitable for applications like conveyor systems and machinery.

  5. Non-Toxic: Polyethylene is non-toxic and safe for use in medical devices and food processing equipment, where hygiene and safety are paramount.

  6. Cost-Efficiency: Polyethylene is often more cost-effective than metal alternatives, making it an attractive option for budget-conscious projects.

Applications in Different Industries

  1. Construction Industry:

    • Insulation Fasteners: Polyethylene screws, nuts, and washers are used in insulation applications, where their corrosion resistance and insulation properties are valuable.

    • Formwork and Scaffolding: These fasteners are employed to assemble formwork and scaffolding due to their lightweight nature, reducing the labor required for installation.

  2. Automotive Industry:

    • Interior Components: Polyethylene fasteners are used for assembling interior components in vehicles, where their lightweight properties contribute to improved fuel efficiency.

    • Underbody Shielding: In the automotive industry, polyethylene bolts are used to secure underbody shields due to their corrosion resistance in harsh road conditions.

  3. Aerospace Industry:

    • Aircraft Interiors: Polyethylene fasteners are employed in aircraft interiors for their weight-saving benefits and resistance to aviation fuels and chemicals.

    • Satellite and Spacecraft: In space applications, where weight and corrosion resistance are critical, polyethylene fasteners are used for securing components.

  4. Electronics Industry:

    • Circuit Board Assembly: Polyethylene screws and washers are used in electronics manufacturing to secure components without risking electrical short circuits.

  5. Medical Devices:

    • Implantable Devices: In the medical field, polyethylene screws and fasteners are used in implantable devices due to their biocompatibility and resistance to bodily fluids.

    • Non-Magnetic Imaging Equipment: Polyethylene is non-magnetic, making it suitable for fasteners in non-ferrous medical imaging equipment like MRI machines.

  6. Marine Industry:

    • Boat Components: Given its corrosion resistance, polyethylene fasteners are used in boat construction and marine equipment to withstand saltwater exposure.

    • Docks and Piers: Polyethylene fasteners are utilized in the assembly of docks and piers, where they resist the corrosive effects of water and environmental factors.

  7. Food Processing Industry:

    • Food Conveyor Systems: Polyethylene washers are crucial components in food conveyor systems, ensuring hygiene and preventing contamination due to their non-toxic properties.

    • Packaging Equipment: Polyethylene fasteners are used in food packaging machinery, where their corrosion resistance and lightweight characteristics are advantageous.

Conclusion

Polyethylene fasteners, including screws, nuts, bolts, and washers, have found their way into numerous industries due to their versatile properties and cost-effectiveness. Whether it's improving fuel efficiency in the automotive industry, enhancing corrosion resistance in marine applications, or ensuring hygiene in food processing, these fasteners offer a range of benefits that make them valuable components in diverse settings. As technology advances and industries seek more sustainable materials, polyethylene fasteners are likely to continue playing a crucial role in various applications, driving innovation and efficiency in the modern world.

Shop Polyethylene (PE)

Key Benefits

  • Chemical Resistance

    PE's ability to resist degradation from exposure to a wide range of chemicals, including acids, bases, and solvents, is crucial in applications where fasteners and precision balls are exposed to aggressive chemical environments. For example, in chemical processing equipment or laboratory settings, PE fasteners and precision balls can maintain their integrity and performance even when exposed to corrosive substances. This ensures long-term reliability in environments where metal fasteners might corrode or degrade, providing a cost-effective and durable alternative.

  • Durability and Impact Resistance

    Precision balls and fasteners made from PE benefit from the material's high impact resistance. This makes them suitable for applications that involve mechanical stress, vibrations, or repeated use, such as in machinery, automotive components, or industrial equipment. PE fasteners can absorb impact and endure wear without breaking or cracking, while precision balls maintain their shape and function even under high-stress conditions. This durability ensures longevity, reducing the need for frequent replacement and lowering maintenance costs.

  • Moisture and Corrosion Resistance

    PE’s non-corrosive properties and resistance to moisture absorption make it an ideal material for precision balls and fasteners used in wet or humid environments. In applications such as marine equipment, plumbing, or outdoor infrastructure, PE components resist rust and corrosion, which is a significant advantage over metal fasteners. PE precision balls are also widely used in valve systems and bearings where exposure to water or other fluids would cause metal components to degrade. Their moisture resistance ensures smooth operation and long service life in environments where metal would fail.

  • Lightweight and Non-Conductive

    PE is a lightweight material, making it easier to handle, transport, and install compared to heavier materials like metal. This is especially beneficial in industries such as aerospace, automotive, or electronics, where reducing weight is critical for performance and fuel efficiency. In addition, PE is non-conductive, making it a valuable choice for applications where electrical insulation is required. Fasteners and precision balls made from PE are often used in electronic components or systems where preventing electrical conductivity is crucial to avoid short circuits or interference, offering both safety and functionality in sensitive applications.

Summarised Properties of Polyethylene (PE)

  • Water Absorption Rate (at 24 hours):

    • LDPE and HDPE typically absorb less than 0.01% of water by weight

    Resistance to Chemical Corrosion:

    PE can resist many harsh chemicals, such as:

    • Acids: Up to 60% sulfuric acid and 30% nitric acid.
    • Alkalis: Solutions like sodium hydroxide (caustic soda).
    • Salts: Strong resistance to saltwater, making PE ideal for marine environments.

    Tensile Strength:

    • LDPE: 8–12 MPa
    • HDPE: 20–38 MPa

  • - Heat operation (105°C)

    - High tensile strength (20Mpa)

    - Ultra low weight 

    - UL94 HB 

    - Abrasion resistance

    - Hydrolysis resistance

    - Non-Magnetic

    - Low thermal conductivity

    - Non-Corrosive

    - Food safe (FSA/FDA Approved)

    - Low friction coefficient

    - Cost effective

Polyethylene Datasheet

View our data sheet for more info.

View Data Sheet