Material Properties Polyethylene Terephthalate (PET) Unreinforced admin May 20, 2016January 17, 2017 Material Properties for Polyethylene Terephthalate (PET) Unreinforced Physical specifications of materials. Materials Polyethylene Terephthalate (PET) Description Unreinforced Density g/cc 1.315 lb/in^3 0.0475 Hardness Brinell unless specified 95(Rockwell-M) Tensile Strength ultimate Mpa 55 Ksi 7.975 Yield Strength MPa 54 Ksi 7.83 Modulus of Elasticity Gpa 2.7 10^6 Psi 0.3913043472 Poisson’s Ratio %Elongation at break 200 %Reduction of area Izod Impact J 1.4 Ft-lb 1.03292 Fracture Toughness Mpa(m)^0.5 5 Ksi(in)^0.5 4.5 Thermal conductivity W/m-K 0.2 Btu/ft-h-F Specific Heat Cpacity J/g-K Btu/lb-F Coefficient of thermal expansion 1E-6/K 83 1E-6/F 46.180451091 Electrical Resistivity Ohm-cm 2000000000000000