Material Properties Polytetrafluoroethylene (PTFE) admin May 20, 2016January 17, 2017 Material Properties for Polytetrafluoroethylene (PTFE) Physical specifications of materials. Materials Polytetrafluoroethylene (PTFE) Description Density g/cc 2.225 lb/in^3 0.0804 Hardness Brinell unless specified 58(Rockwell-R) Tensile Strength ultimate Mpa 25 Ksi 3.625 Yield Strength MPa 19 Ksi 2.755 Modulus of Elasticity Gpa 0.6 10^6 Psi 0.0869565216 Poisson’s Ratio 0.46 %Elongation at break 325 %Reduction of area Izod Impact J 1.6 Ft-lb 1.18048 Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 0.3 Btu/ft-h-F 0.1734104046 Specific Heat Cpacity J/g-K 1.3 Btu/lb-F 0.312 Coefficient of thermal expansion 1E-6/K 119 1E-6/F 66.210526263 Electrical Resistivity Ohm-cm 100000000000