Material Properties Polyethylene Terephthalate (PET) 30% Glass Reinforced admin May 20, 2016January 17, 2017 Material Properties for Polyethylene Terephthalate (PET) 30% Glass Reinforced Physical specifications of materials. Materials Polyethylene Terephthalate (PET) Description 30% Glass Reinforced Density g/cc 1.595 lb/in^3 0.05765 Hardness Brinell unless specified 87(Rockwell-M) Tensile Strength ultimate Mpa 137 Ksi 19.865 Yield Strength MPa 141 Ksi 20.445 Modulus of Elasticity Gpa 10 10^6 Psi 1.44927536 Poisson’s Ratio 0.4 %Elongation at break 3.8 %Reduction of area Izod Impact J 1.1 Ft-lb 0.81158 Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 0.29 Btu/ft-h-F 0.16763005778 Specific Heat Cpacity J/g-K 2.3 Btu/lb-F 0.552 Coefficient of thermal expansion 1E-6/K 25 1E-6/F 13.909774425 Electrical Resistivity Ohm-cm 1000000000000000