Polyetherimde
/PEI
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Copyright 2002 by Roger D. Corneliussen
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Values are from Modern Plastics Encyclopedia 99.
To jump to a particular property, click on the name listed below.
Melt
Flow
Melting
Temperature
Glass
Transition
Processing Molding Pressure
Processing Molding Temperature
Compression
Ratio
Mold
Shrinkage
Tensile
Strength
Elongation
Tensile
Yield Strength
Compressive
Strength
Flexural
Strength
Tensile
Modulus
Flexural
Modulus
Izod
Impact Strength
Hardness
Deflection
Temperature
Thermal
Expansion
Thermal
Conductivity
Specific
Gravity
Dielectric
Strength
Water
Absorption
Note:
The ASTM numbers are linked to
their descriptions on the ASTM website.
To go to the description, simply
click on the ASTM number
Melt
Flow
ASTM D1238
(gm/10 min)
--- gm /10 min
Melting
Temperature degrees C
Tm Crystalline
334 C
Glass
Transition
(C)
Tg (Amorphous)
215 to 217 C
Processing
Temperature
Range Degrees F
Extrusion
640 to 800 F for injection molding
Molding
Pressure Range ( PSI) (ksi)
10000 to 20000 psi
10 to 20 ksi
6
7 to 134 MPa
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Compression
Ratio
1.5 to 3
Mold(Linear)
Shrinkage (in/in)
ASTM D955
0.005 to 0.007 in/in
Tensile
Strength at Break
ASTM D638
14000 psi
93 MPa
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Elongation
at break (%)
ASTM D638
60 %
Tensile
Yield Strength (psi)
ASTM D638
15200 psi
101 MPa
Compressive
Strength (psi)
Rupture or Yield
ASTM
D695
21900 psi
146 MPa
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Flexural
Strength (psi)
Rupture or Yield
ASTM D790
22000 psi
147 MPa
Tensile
Modulus (psi)
ASTM D638
430000 psi
2.9 GPa
To go to Modulus Values,
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Modulus
Compressive
Modulus (psi)
ASTM
D695
480000 psi
3.2 GPa
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Flexural
Modulus (psi)
ASTM D790
At 73 F
480000 psi
3.3 GPa
At 200 F
370000 psi
2.5 GPa
At 250 F
360000 psi
2.4 GPa
At 300 F
350000 psi
2.3 GPa
Izod
Impact (ft-lb/in of notch)
ASTM D256
1.0 to 1.2 ft lb/in of notch
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Hardness
Rockwell ASTM D785
M109-110
--
Shore D65 ASTM
D2240/D2583
---
Coefficient
of Linear Thermal Expansion
(10 exp-6 )in/in/C
47 to 56 (10 x exp –6) in/in /C
0.000 047 to 0.000 056 in/in /C
Deflection
Temperature under flexural load (F)
ASTM D648
264 psi ---
387 to 392 F
66 psi ---
405 to 410 F
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Thermal
Conductivity
(10 x exp –4)al cm/sec cm2 C
ASTM C177
1.6 (10 x exp –4) cal cm/sec cm2
0.00016 cal cm/sec cm2
Specific
Gravity
ASTM D792
1.27
To go to Density /Specific Gravity Values,
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Density
Water
Absorption
(1/8 in thick specimen) (%)
ASTM D570
24 hr --- 0.25 %
Saturation
1.25 %
Dielectric Strength v/mil
(1/8 in thick Specimen; short time)
500 v/mil
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Copyright 2002 by Roger D.
Corneliussen
No part of this transmission is to be
duplicated, in any manor, or forwarded by
electronic mail without the express written
permission of Roger D. Corneliussen
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