Electrically conductive PEEK with carbon fibre reinforcement

PEEK ELS CF 30 is a 30% conductive carbon fibre filled PEEK material, produced and marketed by Ensinger under the brand name TECAPEEK ELS CF 30 black. This electrically conductive plastic provides a very high stiffness and creep resistance through the conductive carbon fibres. Conventional carbon fibres do not have a defined conductivity, therefore, this special carbon reinforced PEEK ELS was developed as a solution for electronic applications. This material can also be used in ESD applications which require a good electrical conductivity. TECAPEEK ELS CF30 black has enhanced mechanical properties in comparison to TECAPEEK ELS nano black, which is also an electrically conductive PEEK black. Furthermore, carbon fiber modified materials are less abrasive than glass fibre modified materials, while also having enhanced wearing and friction properties.


Chemical designation
PEEK (Polyetheretherketone)
1,38 g/cm3

Main Features

  • good heat deflection temperature
  • good chemical resistance
  • inherent flame retardant
  • hydrolysis and superheated steam resistant
  • very high stiffness
  • very high creep resistant
  • high dimensional stability
  • resistance against high energy radiation

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitParameterNorm
    Modulus of elasticity
    (tensile test)
    6800MPa1mm/minDIN EN ISO 527-2
    Tensile strength122MPa50mm/minDIN EN ISO 527-2
    Tensile strength at yield122MPa50mm/minDIN EN ISO 527-2
    Elongation at yield7%50mm/minDIN EN ISO 527-2
    Elongation at break (tensile test)7%50mm/minDIN EN ISO 527-2
    Flexural strength193MPa2mm/min, 10 NDIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    6800MPa2mm/min, 10 NDIN EN ISO 178
    Compression strength47MPa1% / 2%EN ISO 604
    Compression modulus5000MPa5mm/min, 10 NEN ISO 604
    Impact strength (Charpy)62kJ/m2max. 7,5JDIN EN ISO 179-1eU
    Ball indentation hardness355MPaISO 2039-1
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Glass transition temperature147CDIN EN ISO 11357
    Melting temperature341CDIN EN ISO 11357
    Service temperature300Cshort termNN
    Service temperature260Clong termNN
    Thermal expansion (CLTE)410-5*1/K23-60°C, long.DIN EN ISO 11359-1;2
    Thermal expansion (CLTE)410-5*1/K23-100°C, long.DIN EN ISO 11359-1;2
    Thermal conductivity0.66W/(k*m)ISO 22007-4:2008
    Specific heat1.2J/(g*K)ISO 22007-4:2008
    Thermal expansion (CLTE)610-5*1/K100-150°C, long.DIN EN ISO 11359-1;2
  • Electrical properties
    Electrical propertiesValueUnitParameterNorm
    surface resistivity102 - 104ODIN EN 61340-2-3
  • Other properties
    Other propertiesValueUnitParameterNorm
    Resistance to hot water/ bases+--
    Flammability (UL94)V0-corresponding toDIN IEC 60695-11-10;
    Resistance to weathering---
    Water absorption0.03%24h / 96h (23°C)DIN EN ISO 62

Stock program