Unfilled Polyetherimide (PEI)
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Unfilled Polyetherimide (PEI)

 

Thermo-Physical Properties

PROPERTYUNITVALUE / RANGE
Melting Point °C354 - 399
Density g mL-1 1.27
Coefficient of Thermal Expansion x 10-5cm / (cm °C) 5.4 - 5.6
Heat Deflection Temperature, 0.5 MPa °C 207 - 210
Heat Deflection Temperature, 1.8 MPa °C 198 -201
Thermal ConductivityW / mK 0.22
Rockwell Hardness,  R Scalen/a R115 - R120
   
 

Mechanical Properties at 23 °C

PROPERTY UNITVALUE / RANGE
Tensile Strength, Yield at 23 C MPa 109 - 110
Tensile Strength, Break at 23 C MPa  
Elongation, Yield % 7.0
Elongation, Break %  
Tensile Modulus at 23 CMPa 3300 - 3600
Flexural Strength, Yield MPa 145 - 165
Flexural Modulus  MPa 3300 - 3500
Compressive Strength MPa 
Izod Notched J / m 53
Izod Unnotched kJ / m2 1335
 

Electrical Properties

PROPERTY UNITVALUE / RANGE
Volume Resistivity
Ohm-cm>1012
 Dielectric Strength V/mm x 104 1.9 - 3.0
Dielectric Constant @ 1 MHz n/a 3.0 - 3.8
Dissipation Factor @ 1 MHz n/a 0.001 - 0.005
 

Other Properties

PROPERTY UNITVALUE / RANGE
Processing Temperature
°C 
Linear Mold Shrinkage cm/cm 0.001 - 0.006
Continuous Service Temperature °C 150 -175
Water Absorption, 24 hr. Immersion% 0.12 - 0.25
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