Material Properties Polymethyl Methacrylate (PMMA) Unreinforced admin May 20, 2016January 17, 2017 Material Properties for Polymethyl Methacrylate (PMMA) Unreinforced Physical specifications of materials. Materials Polymethyl Methacrylate (PMMA) Description Unreinforced Density g/cc 1.17 lb/in^3 0.04225 Hardness Brinell unless specified 85(Rockwell-M) Tensile Strength ultimate Mpa 62 Ksi 8.99 Yield Strength MPa 69 Ksi 10.005 Modulus of Elasticity Gpa 2.9 10^6 Psi 0.4202898544 Poisson’s Ratio %Elongation at break 15 %Reduction of area Izod Impact J 0.16 Ft-lb 0.118048 Fracture Toughness Mpa(m)^0.5 1.2 Ksi(in)^0.5 1.08 Thermal conductivity W/m-K 0.22 Btu/ft-h-F 0.12716763004 Specific Heat Cpacity J/g-K 1.46 Btu/lb-F 0.3504 Coefficient of thermal expansion 1E-6/K 95 1E-6/F 52.857142815 Electrical Resistivity Ohm-cm 100000000000000