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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