Linear Low Density Polyethylene /LLDPE
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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
122 to 124 C
Glass
Transition
(C)
Tg (Amorphous)
--- C
Processing
Temperature
Range Degrees F
Extrusion
350 to 500 F for injection molding
450 to 600 F for extrusion
Molding
Pressure Range ( PSI) (ksi)
5000 to 15 000 psi
5 to 15 ksi
33 to 100 MPa
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Mold(Linear)
Shrinkage (in/in)
ASTM D955
0.020 to 0.022
Tensile
Strength at Break
ASTM D638
1900 to 4000 psi
13 to 27 MPa
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Elongation
at break (%)
ASTM D638
100 to 965 %
Tensile
Yield Strength (psi)
ASTM D638
1400 to 2800 psi
9 to 19 MPa
Compressive
Strength (psi)
Rupture or Yield
ASTM
D695
--- psi
--- MPa
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Flexural
Strength (psi)
Rupture or Yield
ASTM D790
--- psi
--- MPa
Tensile
Modulus (psi)
ASTM D638
38 000 to 75 000 psi
0.25 to 0.5 GPa
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Modulus
Compressive
Modulus (psi)
ASTM
D695
--- psi
--- GPa
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Flexural
Modulus (psi)
ASTM D790
At 73 F
40 000 to 105 000 psi
0.27 to 0.7 GPa
At 200 F
--- psi
--- GPa
At 300 F
--- psi
--- GPa
Izod
Impact (ft-lb/in of notch)
ASTM D256
1.0 to No
break ft lb/in of notch
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Hardness
Rockwell ASTM D785
---
--
Shore D65 ASTM
D2240/D2583
Shore D55-56
Coefficient
of Linear Thermal Expansion
(10 exp-6 )in/in/C
--- (10 x exp –6) in/in /C
--- in/in /C
Deflection
Temperature under flexural load (F)
ASTM D648
264 psi ---
--- F
66 psi ---
--- F
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Thermal
Conductivity
(10 x exp –4)al cm/sec cm2 C
ASTM C177
--- (10 x exp –4) cal cm/sec cm2
--- cal cm/sec cm2
Specific
Gravity
ASTM D792
0.918 to 0.940
To go to Density /Specific Gravity Values,
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Density
Water
Absorption
(1/8 in thick specimen) (%)
ASTM D570
24 hr --- <0.01 %
Saturation
--- %
Dielectric Strength v/mil
(1/8 in thick Specimen; short time)
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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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