PP
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Polypropylene (PP)

 

Thermo-Physical Properties

PROPERTY UNIT VALUE / RANGE 
Melting Point °C160 - 163
Density g mL-1 0.90 - 0.91 (0.905)
Coefficient of Thermal Expansion x 10-5cm / (cm °C) 8.0 - 10
Heat Deflection Temperature, 0.5 MPa °C 78 - 122
Heat Deflection Temperature, 1.8 MPa annealed (unannealed) °C  
Thermal ConductivityW / mK 0.17 - 0.23
Rockwell Hardness,  R Scale n/a R65 - R110
    
 

Mechanical Properties at 23 °C

PROPERTY UNITVALUE / RANGE
Tensile Strength, Yield at 23 C MPa 31 - 45
Tensile Strength, Break at 23 C MPa 18 - 22
Elongation, Yield % 10 - 12
Elongation, Break % 50 - 145
Tensile Modulus at 23 CMPa 1950
Flexural Strength, Yield MPa  
Flexural Modulus  MPa 1350 - 1800
Compressive Strength MPa 
Izod Notched J/m  (kJ/m2) 35 - 60 (3.0 - 6.5)
Izod Unnotched J/m  
 

Electrical Properties

PROPERTY UNITVALUE / RANGE
Volume Resistivity
Ohm-cm  > 1016
 Dielectric Strength V/mm x 104 2.3 - 2.5
Dielectric Constant @ 1 MHz n/a 2.1 - 2.6
Dissipation Factor @ 1 MHz n/a 0.0002 - 0.0005
 

Other Properties

PROPERTY UNITVALUE / RANGE
Processing Temperature
°C200 - 280
Linear Mold Shrinkage cm/cm 0.01 - 0.02
Continuous Service Temperature °C 90 - 120
Water Absorption, 24 hr. Immersion% 0.01 - 0.03
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