Alternative and trade names


Twaron® is a para-aramid, high-performance yarn which combines the following characteristics:

  • High strength: excellent strength-to-weight ratio
  • High modulus
  • High dimensional stability: very low creep, small negative thermal expansion coefficient
  • Excellent thermal stability: usable across a wide range, no melting point, high heat stability, low heat conductivity
  • High cut resistance
  • Good chemical resistance
  • Low flammability
  • Electrically non-conductive
  • Long, well-characterised lifetime under static and dynamic loads
  • Properties


    Density ρ

    1.44 - 1.45 g/cm³ at 20 °C

    Limiting oxygen index LOI

    29 - 40 % at 20 °C

    Water content cwater,cont

    2 - 7 % at 20 °C


    Elastic modulus E

    60 - 145 GPa at 20 °C

    Elongation A

    2.3 - 4.2 % at 20 °C

    at break


    1.9 - 2.5 N/tex at 20 °C

    Tensile strength Rm

    2700 - 3600 MPa at 20 °C


    Melting point Tm

    500 °C

    Technological properties

    Application areas

    Optical fiber,cables, hoses, tires, rubber products, ballistic protection, protective clothing, ropes and cables, composites and belts.

    This material data has been provided by Matmatch.

    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.