TECAPEI™ natural (Sabic Ultem ® 1000 series)

unfilled PEI

TECAPEI natural (PEI) is an unreinforced polyetherimide, suitable for contact with foods, that exhibits high mechanical strength and rigidity. The characteristic profile includes very good hydrolysis resistance, and dimensional stability, combined with a relatively high long term service temperature.



Chemical designation
PEI (Polyetherimide)
amber transparent
Alternative colors available
1,27 g/cm3

Main Features

  • high dielectric strength
  • inherent flame retardant
  • low smoke emissions
  • easily machinable to tight tolerance
  • high thermal and mechanical capacity
  • flame retardant according to UL94 V-0

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitConditionTest Method
    Tensile strength at break17,500psi@ 73 °FASTM D 638
    Modulus of elasticity
    (tensile test)
    430,000psi@ 73 °FASTM D 638
    Elongation at break (tensile test)40%@ 73 °FASTM D 638
    Elongation at yield7%@ 73 °FASTM D 638
    Flexural strength23,000psi@ 73 °FASTM D 790
    Notched impact strength (Izod)0.60ftlbsin@ 73 °FASTM D 256
    Modulus of elasticity
    (flexural test)
    480,000psi@ 73 °FASTM D 790
    Rockwell hardness110-M ScaleASTM D 785
    Compression strength21,000psi@ 10% strainASTM D 695
    Compression modulus480,000psiASTM D 695
    Compression strength3,500psi@1 % strainASTM D 695
    Rockwell hardness126-R ScaleASTM D 785
  • Thermal properties
    Thermal propertiesValueUnitConditionTest Method
    Deflection temperature410F@ 66 psiASTM D 648
    Deflection temperature394F@264 psiASTM D 648
    Thermal expansion (CLTE)3.1*10-5ininFASTM E 831
    Vicat softening point426FASTM D 1525
    Thermal conductivity1.5BTU-in/hr-ft^2 - degASTM D 2214
    Service temperature392Fshort term-
    Service temperature338FLong Term-
  • Electrical properties
    Electrical propertiesValueUnitConditionTest Method
    Dielectric strength709V/milIn OilASTM D 149
    Dielectric strength830V/milIn AirASTM D 149
    Dissipation factor0.0013-1 kHz, 50% RH, 73 °FASTM D 150
    Dielectric constant3.15-1 kHz, 50% RHASTM D 150
    Volume resistivity1.0 x 1017O*cm1/16ASTM D 257
  • Other properties
    Other propertiesValueUnitConditionTest Method
    Flammability (UL94)V0--
    Moisture absorption.25%@ 24 hrs, 73 °FASTM D 570
    Moisture absorption1.25%@ saturation, 73 °FASTM D 570
    Flammabilitypass-3 mmFAR 25.853

Stock program