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Glass is far inferior to paper, plastic and Styrofoam in terms of insulation. Thermal conductivity in terms of BTU/(feet - hour - degrees F) is 1.82 for glass, 0.09 for paper, 0.06 for Styrofoam. The conductivity of plastics varies depending on the materials: for polypropylene and polycarbonate, the thermal conductivity values are 0.69 and 0.35, respectively.
Physical Properties of Strontium. 1  Atomic Mass Average: 87.62. 2  Boiling Point: 1657K 1384Â°C 2523Â°F. 3  Coefficient of lineal thermal expansion/K-1: 23E-6. 4  Conductivity Electrical: 0.0762 106/cm â¦. 5  Density: 2.54g/cc @ 300K. 6  Description: Soft silvery yellow metal that will burn if ignited in air. 7  Elastic Modulus: Bulk: 12/GPa.