TECASINT 4111 natural

unfilled polyimide

Compared with the other TECASINT materials the TECASINT 4100 series exhibits extremely high thermal stability, extremely low moisture absorption and high mechanical rigidity. This is accompanied by a very high oxidative stability and increased resistance to chemicals. TECASINT 4111 has a very high thermal stability (HDT/A=470°C). Rigidity and modulus are significantly increased vis-a-vis conventional polyimides in a temperature range up to 400 °C. The material has minimal thermal and electrical conductivity. The plastic is highly pure with low outgassing in accordance with ESA regulation ECSS-Q-70-20.


Chemical designation
PI (Polyimide)
1,47 g/cm3

Main Features

  • very high thermal and oxidative resistance
  • very low water absorption
  • high thermal and mechanical capacity
  • low outgassing
  • good chemical resistance
  • high creep resistance
  • resistance against high energy radiation
  • sensitive to hydrolysis in higher thermal range

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitParameterNorm
    Notched impact strength (Charpy)1.1kJ/m2max 7.5 J, 23°CDIN EN ISO 179-1
    Impact strength (Charpy)20kJ/m2max 7.5 J, 23°CDIN EN ISO 179-1
    Shore hardness90-Shore D, 23°C-
    Tensile strength100MPa50 mm/min, 23°CDIN EN ISO 527-1
    Elongation at break (tensile test)1.7%50 mm/min, 23°CDIN EN ISO 527-1
    Modulus of elasticity
    (tensile test)
    6100MPa1 mm/min, 23°CDIN EN ISO 527-1
    Flexural strength160MPa10 mm/min, 23°CDIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    6100MPa2 mm/min, 23°CDIN EN ISO 178
    Compression strength250MPa10 mm/min, 23°CEN ISO 604
    Compression modulus2500MPa1 mm/min, 23°CEN ISO 604
    Elongation at break (tensile test)2.5%10 mm/min, 23°CDIN EN ISO 178
    Compression strength210MPa10mm/min, 10% strain, 23°CEN ISO 604
    Compressive strain at break25%10 mm/min, 23°CEN ISO 604
    Ball indentation hardness345MPa-
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Glass transition temperaturen.a.CDIN EN ISO 11357
    Heat distortion temperature470C1.82 MPaASTM D 648
    Thermal expansion (CLTE)5.210-5*1/K50-200°CDIN 53 752
    Thermal expansion (CLTE)6.910-5*1/K200-300°CDIN 53 752
    Thermal expansion (CLTE)9.910-5*1/K300-400°CDIN 53 752
    Thermal conductivity0.52W/(k*m)40°CASTM E1461
    Specific heat1.24J/(g*K)ASTM E1461
    Service temperature450Cshort term-
    Service temperature294Clong term-
  • Electrical properties
    Electrical propertiesValueUnitParameterNorm
    surface resistivity1016O23°CASTM D 257
    volume resistivity1016O*cm23°CASTM D 257
    Dielectric constant3.7-1 MHz, 23°CASTM D 150
    Electric strength DC22.7kV*mm-123°CASTM D 149
    Dielectric loss factor0.0013-1 MHz, 23°CASTM D 150
  • Other properties
    Other propertiesValueUnitParameterNorm
    Water absorption0.08%24 h in water, 23°CDIN EN ISO 62
    Water absorption0.3%24 h in water, 80°CDIN EN ISO 62
    Flammability (UL94)V0-corresponding toDIN IEC 60695-11-10;
    Oxygen Index53%EN ISO 4589-2

Stock program