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PP Detailed Properties

(Polypropylene)

The table below lists a generally accepted summary of properties that we believe to be reliable.   Please note that many of these resins are produced in several varieties and property characteristics may vary.  Therefore, determination of resin is dependent on the application and this table is only meant to serve as a general guideline.    

 

PP Properties ASTM UNIT PP
MECHANICAL PROPERTIES
Specific Gravity D792   .905
Elongation  D638 % 10~20
Tensile Strength  D638 psi 4,800
Flexural Strength D790 psi 5,400
Compressive Strength D695   6,000
Tensile Elastic Modulus 
(Young's Modulus) 
D638 (10~5)psi 1.6
Flexural Modulus D790 (10~5)psi 1.7~2.5
Hardness Durometer  D785 Rockwell R 80~110
Impact Strength IZOD
73F/23C
D256 notched ft/lbs/in 0.5~2.2
THERMAL PROPERTIES
Melting Point   C
(F)
121
(250)
Upper Service
Temperature(20,000h)
  C
(F)
104
(220)
Flame Rating**   UL94 n.r.
Thermal Conductivity C117 10~4 cal/sec/cm2,C/cm 2.8
ELECTRICAL PROPERTIES
Dielectric Constant D150 1kHz 2.2~2.6
Dissipation Factor D150 1kHz 0.0005~0.0018
Dielectric Strength D149 125MILV. 475~660
Volume Resistivity   D257 ohm-cm
at 730F, 50% RH
10~17
GENERAL PROPERTIES
Chemical/Solvent
Resistance
    Excellent
Water Absorption, 24h D570 % <0.03
RefractiveIndex     1.51~1.54
Arc Resistivity D495 sec 100~160