Glass fibre and epoxy resin material

Epoxy is made of of glass fibres and epoxy resins. In terms of performance, this thermosetting plastic is a step further than the phenol/paper and phenol/cotton fabric materials. Compared to Phenol, Epoxy has superior mechanical properties such as compressive strength, impact strength and resistance, and tensile strength.

Epoxy has an excellent operating temperature range, chemical resistance and absorbs hardly any moisture. Electrical engineering is one of the most important areas of application for Epoxy sheet, thanks to its remarkable electrical and dielectric properties.

Epoxy Epoxy

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Sheet Rod

Unique features

  • Excellent electrical properties
  • Excellent mechanical properties
  • High impact and tensile strength
  • Very high stiffness
  • Flame-retardant UL 94: V-0


  • Printed circuit boards
  • Medical industry
  • Transport industry
  • Very high rigidity components
  • Electrical insulation at high temperatures

Machining options

  • Gluing
  • Water jet cutting
  • Laser cutting
  • Warm bending
  • Welding
  • Thermoforming
  • Cold forming
  • Yes
  • Not in all cases
  • No

Technical information

  • General
    Definition Norm Unit Value
    Density ISO 1183 g/cm³ 1.8
    Moisture absorption in normal climate
    Fire rating DIN 4102 V-0
    Specific heat capacity kj/Kg°C
  • Mechanical
    Definition Norm Unit Value
    Tensile strength DIN 53455 N/mm 220
    Elongation to break DIN 53455 1
    E-Module DIN 53457 (23°C) N/mm²  20000
    Bending strength DIN 53452 N/mm²  350
    Impact strength DIN 53453 (23°C) Charpy 50
    Shore or ball pressure hardness Shore °D 85
    Coefficient of friction
  • Electrical
    Definition Norm Unit Value
    Relative electrical constant DIN 53485 (100Hz) 100 Hz 5
    Dielectric loss factor DIN 53483 (100Hz) tan (..x10-³ 0.038
    Specific resistance DIN 53482 16 cm 10
    Surface resistance DIN 53482 13
    Creep current resistance DIN 53480 KC 200
    Breakdown voltage DIN 53481 kV/mm 35
  • Thermal
    Definition Norm Unit Value
    Crystalline melting point °C
    Heat conductivity DIN 52162 W/m°K 0.3
    Linear coefficient of expansion DIN 53762 mm/m°C 0.015
    Long-term no-load operating temperature °C -10 / 140
    Maximum short-term operating temperature °C 180
    Heat deformation DIN 53461 °C
  • Temperature range
    Minimum temperature Maximum temperature
     -10°C  +140°C