Unfilled Polyetherimide (PEI)
Thermo-Physical Properties
PROPERTY | UNIT | VALUE / RANGE |
Melting Point |
°C | 354 - 399 |
Density | g mL-1 |
1.27 |
Coefficient of
Thermal Expansion x 10-5 | cm /
(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 Conductivity | W / mK |
0.22 |
Rockwell
Hardness, R Scale | n/a |
R115 - R120 |
| | |
Mechanical Properties at 23 °C
PROPERTY |
UNIT | VALUE / 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 C | MPa |
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 |
UNIT | VALUE / RANGE |
| 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 |
UNIT | VALUE / RANGE |
| °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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