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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.
Since the total thermal conductivity of titanium metal is over twice that of the alloys studied, both electronic and lattice components are considerably greater than those for the titanium alloys. The data of DEEM et al. for the A-55 sample are seen to be in fair agreement with the present results.