Liquid Crystal Polymers
LCP
Unfilled; medium melting point
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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
280 to 421 C
Glass
Transition
(C)
Tg (Amorphous)
--- C
Processing
Temperature
Range Degrees F
Extrusion
540 to 770 F for injection molding
Molding
Pressure Range ( PSI) (ksi)
1000 to 16000 psi
1 to 16 ksi
6.7 to 107 MPa
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Compression
Ratio
2.5 to 4
Mold(Linear)
Shrinkage (in/in)
ASTM D955
0.001 to 0.006 in/in
Tensile
Strength at Break
ASTM D638
15900 to 27000 psi
106 to 180 MPa
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Elongation
at break (%)
ASTM D638
1.3 to 4.5 %
Tensile
Yield Strength (psi)
ASTM D638
--- psi
--- MPa
Compressive
Strength (psi)
Rupture or Yield
ASTM
D695
6200 to 19000 psi
41 to 127 MPa
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Flexural
Strength (psi)
Rupture or Yield
ASTM D790
19000 to 35500 psi
127 to 237 MPa
Tensile
Modulus (psi)
ASTM D638
1400000 to 2800000 psi
9.3 to 18.7 GPa
To go to Modulus Values,
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Modulus
Compressive
Modulus (psi)
ASTM
D695
400000 to 900000 psi
2.7 to 6 GPa
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Flexural
Modulus (psi)
ASTM D790
At 73 F
1770000 to 2700000 psi
11.8 to 18 GPa
At 200 F
1500000 to 1700000 psi
10 to 11.3 GPa
At 250 F
1300000 to 1500000 psi
8.7 to 10 GPa
At 300 F
1200000 to 1450000 psi
8 to 9.7 GPa
Izod
Impact (ft-lb/in of notch)
ASTM D256
1.7 to 10 ft lb/in of notch
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Hardness
Rockwell ASTM D785
M76; R60-66
--
Shore D65 ASTM
D2240/D2583
---
Coefficient
of Linear Thermal Expansion
(10 exp-6 )in/in/C
5
to 7 (10 x exp –6) in/in /C
0.000 005 to 0.000 007 in/in /C
Deflection
Temperature under flexural load (F)
ASTM D648
264 psi ---
356 to 671 F
66 psi ---
--- F
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Thermal
Conductivity
(10 x exp –4)al cm/sec cm2 C
ASTM C177
2 (10 x exp –4) cal cm/sec cm2
0.0002 cal cm/sec cm2
Specific
Gravity
ASTM D792
1.35 to 1.84
To go to Density /Specific Gravity Values,
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Density
Water
Absorption
(1/8 in thick specimen) (%)
ASTM D570
24 hr --- <0.1%
Saturation
<0.1 %
Dielectric Strength v/mil
(1/8 in thick Specimen; short time)
800 to 980 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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