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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
212 to 265 C
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Contents
Glass
Transition
(C)
Tg (Amorphous)
68 to 80 C
Processing
Temperature
Range Degrees F
Extrusion
440 to 660 F for injection molding
520 to 580 F for extrusion
Molding
Pressure Range ( PSI) (ksi)
2000 to 7000 psi
2 to 7 ksi
13 to 47 MPa
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Contents
Mold(Linear)
Shrinkage (in/in)
ASTM D955
0.009 to 0.022 in/in
Tensile
Strength at Break
ASTM D638
7000 to 10500 psi
47 to 70 MPa
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Contents
Elongation
at break (%)
ASTM D638
30 to 300 %
Tensile
Yield Strength (psi)
ASTM D638
8600 psi
57 MPa
Compressive
Strength (psi)
Rupture or Yield
ASTM
D695
11000 to 15000 psi
73 to 100 MPa
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Contents
Flexural
Strength (psi)
Rupture or Yield
ASTM D790
12000 to 18000 psi
80 to 120 MPa
Tensile
Modulus (psi)
ASTM D638
400000 to 600000 psi
2.7 to 4.0 GPa
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Modulus
Compressive
Modulus (psi)
ASTM
D695
--- psi
--- GPa
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Contents
Flexural
Modulus (psi)
ASTM D790
At 73 F
350000 to 450000 psi
2.3 to 3.0 GPa
At 200 F
--- psi
--- GPa
At 250 F
--- psi
--- GPa
At 300 F
--- psi
--- GPa
Izod
Impact (ft-lb/in of notch)
ASTM D256
0.25 to 0.7 ft lb/in of notch
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Contents
Hardness
Rockwell ASTM D785
M94-101; R111
--
Shore D65 ASTM
D2240/D2583
---
Coefficient
of Linear Thermal Expansion
65
(10 x exp –6) in/in /C
0.000 065 in/in /C
Deflection
Temperature under flexural load (F)
ASTM D648
264 psi ---
70 to 150 F
66 psi ---
167 F
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Contents
Thermal
Conductivity
ASTM C177
3.3 to 3.6 (10 x exp –4) cal cm/sec cm2
0.00033 to 0.00036 cal cm/sec cm2
Specific
Gravity
ASTM D792
1.29 to 1.40
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Density
Water
Absorption
(1/8 in thick specimen) (%)
ASTM D570
24 hr --- 0.1 to 0.2%
Saturation
0.2 to 0.3 %
Dielectric Strength v/mil
(1/8 in thick Specimen; short time)
420 to 550 v/mil
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