TECAPEI GF30 natural

PEI filled with 30% glass fibre

This is a special 30% glass fibre reinforced PEI, manufactured by Ensinger under the tradename TECAPEI GF30 natural. In comparison to unfilled PEI (TECAPEI natural), PEI GF30 demonstrates high rigidity, very high mechanical strength, as well as extremely good dimensional stability, and good resistance to high energy radiation. These properties make PEI with 30% glass fibres suitable for use in parts that are exposed to high static loads over long periods in high temperature conditions.



Chemical designation
PEI (Polyetherimide)
1,51 g/cm3

Main Features

  • good heat deflection temperature
  • high dimensional stability
  • high thermal and mechanical capacity
  • high strength
  • high creep resistance
  • resistance against high energy radiation
  • electrically insulating
  • sensitive to stress cracking

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitParameterNorm
    Modulus of elasticity
    (tensile test)
    5300MPa1mm/minDIN EN ISO 527-2
    Tensile strength135MPa5mm/minDIN EN ISO 527-2
    Tensile strength at yield135MPa5mm/minDIN EN ISO 527-2
    Elongation at yield4%5mm/minDIN EN ISO 527-2
    Elongation at break (tensile test)4%50mm/minDIN EN ISO 527-2
    Flexural strength195MPa2mm/min, 10 NDIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    5500MPa2mm/min, 10 NDIN EN ISO 178
    Compression strength39MPa1% / 2%EN ISO 604
    Compression modulus4200MPa5mm/min, 10 NEN ISO 604
    Impact strength (Charpy)51kJ/m2max. 7,5JDIN EN ISO 179-1eU
    Notched impact strength (Charpy)6kJ/m2max. 2JDIN EN ISO 179-1eA
    Ball indentation hardness325MPaISO 2039-1
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Glass transition temperature213CDIN EN ISO 11357
    Melting temperatureCDIN EN ISO 11357
    Service temperature200Cshort termNN
    Service temperature170Clong termNN
    Thermal expansion (CLTE)310-5*1/K23-60°C, long.DIN EN ISO 11359-1;2
    Thermal expansion (CLTE)310-5*1/K23-100°C, long.DIN EN ISO 11359-1;2
    Thermal expansion (CLTE)410-5*1/K100-150°C, long.DIN EN ISO 11359-1;2
  • Electrical properties
    Electrical propertiesValueUnitParameterNorm
    surface resistivity1014ODIN IEC 60093
    volume resistivity1014O*cmDIN IEC 60093
  • Other properties
    Other propertiesValueUnitParameterNorm
    Resistance to hot water/ bases+--
    Flammability (UL94)V0-corresponding toDIN IEC 60695-11-10;
    Resistance to weathering---
    Water absorption<0.1%24h / 96h (23°C)DIN EN ISO 62

Stock program