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HDPE (High Density Polyethylene) Typical Properties

Physical Properties English  
Density 0.0338 - 0.0348 lb/in³  0.948 g/cc
Apparent Bulk Density 0.021 - 0.022 lb/in³   0.59 g/cc
Water Absorption 0.01 %
Moisture Vapor Transmission 0.965 cc-mil/100 in²-24hr-atm
Environmental Stress Crack Resistance 10 - 5000 hour   1600 hr

Mechanical Properties
Hardness, Shore D 58 - 65   62
Tensile Strength, Ultimate 3480 - 6530 psi   30 MPa
Tensile Strength, Yield 2180 - 4350 psi   21.9 MPa
Elongation at Break 500 - 1000 %   840%
Tensile Modulus 116 - 144 ksi   0.86 GPa
Flexural Modulus 72.5 - 220 ksi   0.928 GPa
Izod Impact, Notched 1.5 - 14.1 ft-lb/in   3.7 J/cm
Tensile Impact Strength 152 - 228 ft-lb/in²   380 kJ/m²
Coefficient of Friction 0.28  

Electrical Properties
Electrical Resistivity 1e+017 ohm-cm
Surface Resistance 1e+017 ohm
Dielectric Constant 2.3
Dissipation Factor 0.0001 - 0.0005   0.0003

Thermal Properties
CTE, linear 20°C 77.8 µin/in-°F
Melting Point 255 - 268 °F   130°C
Vicat Softening Point 226 - 264 °F   120°C
Brittleness Temperature -148 - -94 °F   -86.2°C