Copolyester thermoplastic elastomer (TPC)

Alternative and trade names
Riteflex®, Arnitel®, Hytrel®
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The main features are:

  • Performs over a temperature range of -40°C to +121°C
  • Very flexible with high-impact strength even at low temperatures
  • High mechanical strength
  • Good resilience
  • Highly resistant to chemicals and aging
  • Excellent surface gloss and good paintability
  • Easy and economical to process
  • Excellent wear resistance
  • No softening additives are required: chemical bonding of hard segments with soft segments; flexibility is intrinsic to the block copolymer structure
  • Applications possible at higher temperatures than TPE
  • This material data has been provided by M-Base.

    "Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

    Ashby charts

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    0.9 - 1.28 g/cm³

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    Elastic modulus

    0.045 - 0.55 GPa

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    150.0 - 900.0 %

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    Impact strength, Charpy notched

    10 kJ/m²

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    no break

    Tensile strength

    15.0 - 55.0 MPa

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    at 6-45% strain

    Impact strength, Charpy unnotched

    no break



    Coefficient of thermal expansion

    0.00013 - 0.00024 1/K

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    Melting point

    150.0 - 225.0 °C

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    Specific heat capacity

    1200.0 - 1500.0 J/(kg·K)

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    Thermal conductivity

    0.18 - 0.22 W/(m·K)

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    UL 94 HB



    Dielectric constant

    3.5 [-]

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    7 [-]

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    Electrical resistivity

    1000000000.0 - 100000000000000.0 Ω·m

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    Technological properties

    Application areas

    Flexible membranes, hose jackets, gaskets, gears, bearings


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    Processing methods

    Injection molding, blow molding, extrusion, casting, thermoforming, calandering, coating, rotational molding