HDPE
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High-Density Polyethylene (HDPE)

 

Thermo-Physical Properties

PROPERTY UNIT VALUE / RANGE 
Melting Point °C126 - 135
Density g mL-1 0.955 - 0.961
Coefficient of Thermal Expansion x 10-5cm / (cm °C) 12.5 - 18.0
Heat Deflection Temperature, 0.5 MPa °C 64 - 77
Heat Deflection Temperature, 1.8 MPa (unannealed) °C 76.5 - 78
Thermal ConductivityW / mK 0.35 - 0.49
Shore  Hardness,  D Scale n/a 55 - 67
    
 

Mechanical Properties at 23 °C

PROPERTY UNITVALUE / RANGE
Tensile Strength, Yield at 23 C MPa 23.0 - 29.5
Tensile Strength, Break at 23 C MPa 30.5 - 33
Elongation, Yield % 9 - 18
Elongation, Break %  600 - 1350
Tensile Modulus at 23 CMPa 900 - 1550
Flexural Strength, Yield MPa  
Flexural Modulus  MPa 970- 1380
Compressive Strength MPa 
Izod Notched J/m  (kJ/m2) 71 - 159 (20)
Izod Unnotched J/m No Break
 

Electrical Properties

PROPERTY UNITVALUE / RANGE
Volume Resistivity
Ohm-cm  6 x 1015
 Dielectric Strength V/mm x 104 2.1 - 3.5
Dielectric Constant @ 1 MHz n/a 2.2 - 2.4
Dissipation Factor @ 1 MHz n/a 0.0001 - 0.0005
 

Other Properties

PROPERTY UNITVALUE / RANGE
Processing Temperature
°C 
Linear Mold Shrinkage cm/cm 0.017
Continuous Service Temperature °C -73 - 82
Water Absorption, 24 hr. Immersion%  0.01 - 0.03
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