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Unplasticised Polyvinyl Chloride (PVC-U)

General Information:

  • Product Name: Unplasticized Polyvinyl Chloride (PVC-U)
  • Classification: Rigid thermoplastic


Typical Properties:

  • Density: 1.35 – 1.45 g/cm³
  • Tensile Strength: 40 – 55 MPa
  • Elongation at Break: 20 – 50%
  • Tensile Modulus: 2,000 – 3,000 MPa
  • Vicat Softening Point: 75 – 85°C
  • Notched Izod Impact Strength: 2.5 – 8.0 kJ/m² (depends on test conditions and specific grades)
  • Coefficient of Linear Thermal Expansion: 60 – 80 x 10^(-6) K^(-1)
  • Dielectric Constant: 3.0 – 4.5
  • Volume Resistivity: >10^15 ohm.cm


Features and Benefits:

  • Rigidity: PVC-U is rigid and durable with good impact strength.
  • Chemical Resistance: Offers resistance to many acids, alkalis, salts, and organic compounds.
  • Weather Resistance: Exceptional resistance to UV radiation and weathering.
  • Non-Conductive: Excellent electrical insulation properties.
  • Low Maintenance: PVC-U products typically require little to no maintenance.
  • Flame Retardancy: Inherently self-extinguishing and flame retardant.



  • Building & Construction: Window frames, doors, cladding, and fascia.
  • Piping Systems: For potable water, sewage, and drainage.
  • Electrical: Conduits, electrical boxes, and cable insulation.
  • Medical: Medical devices and components.
  • General Purpose: Signboards, profiles, and shutters.


Processing Methods:

  • Extrusion (pipes, profiles, window frames)
  • Injection Molding (fittings, components)
  • Thermoforming (limited applications)


Environmental Impact and Recycling:

  • PVC-U can be mechanically recycled, but chemical recycling is more complex due to the chlorine content.
  • Proper disposal is crucial as PVC-U combustion can release hydrochloric acid.
  • Efforts are being made to improve PVC-U recycling through better collection, sorting, and processing techniques.


Storage and Handling:

  • Store in a cool, dry place away from direct sunlight.
  • Handle with care to avoid mechanical damage.
  • Avoid exposure to high temperatures which can cause deformation.


Safety Information:

  • PVC-U is safe for various consumer and industrial applications.
  • When processing PVC-U, proper ventilation is essential to avoid inhaling fumes or degradation products.
  • PVC-U is difficult to ignite but will release hydrochloric acid and other toxic gases when burned. It should be kept away from open flames.

Note: This technical data sheet provides general information and typical values for PVC-U. Actual specifications can differ based on the manufacturer and specific product grade. Always refer to manufacturer-specific data sheets for detailed information on a particular product.

Disclaimer: The information provided is “as is” without any warranties. Users are advised to conduct their own verification and testing for specific applications.

Chlorinated Polyvinyl Chloride C-PVC Applications & Properties
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