Material Properties Polypropylene (PP) Unreinforced May 20, 2016January 17, 2017 admin Material Properties for Polypropylene (PP) Unreinforced Physical specifications of materials. Materials Polypropylene (PP) Description Unreinforced Density g/cc 1.07 lb/in^3 0.03865 Hardness Brinell unless specified 92(Rockwell-R) Tensile Strength ultimate Mpa 50 Ksi 7.25 Yield Strength MPa 28 Ksi 4.06 Modulus of Elasticity Gpa 2.25 10^6 Psi 0.326086956 Poisson’s Ratio %Elongation at break 427 %Reduction of area Izod Impact J 0.16 Ft-lb 0.118048 Fracture Toughness Mpa(m)^0.5 3.7 Ksi(in)^0.5 3.33 Thermal conductivity W/m-K 0.12 Btu/ft-h-F 0.06936416184 Specific Heat Cpacity J/g-K 2 Btu/lb-F 0.48 Coefficient of thermal expansion 1E-6/K 105 1E-6/F 58.421052585 Electrical Resistivity Ohm-cm 100000000000000 Auto Amazon Links: No products found.Auto Amazon Links: No products found.