Material Properties Polybutylene terepthalate (PBT) May 20, 2016January 17, 2017 admin Material Properties for Polybutylene terepthalate (PBT) Physical specifications of materials. Materials Polybutylene terepthalate (PBT) Description Density g/cc 1.355 lb/in^3 0.04895 Hardness Brinell unless specified 81(Rockwell-M) Tensile Strength ultimate Mpa 55 Ksi 7.975 Yield Strength MPa 67 Ksi 9.715 Modulus of Elasticity Gpa 12 10^6 Psi 1.739130432 Poisson’s Ratio %Elongation at break 148 %Reduction of area Izod Impact J 0.27 Ft-lb 0.199206 Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 0.2 Btu/ft-h-F 0.1156069364 Specific Heat Cpacity J/g-K 2 Btu/lb-F 0.48 Coefficient of thermal expansion 1E-6/K 97 1E-6/F 53.969924769 Electrical Resistivity Ohm-cm 100000000000000 Auto Amazon Links: No products found.Auto Amazon Links: No products found.