Density and thermal expansion calculation of silicate glass melts [1] (PDF, 230 kB)

Glass Density at Room Temperature >


The relation between the chemical composition and the density of silicate glass melts at temperatures of 1000°C to 1400°C was analyzed statistically. The analysis was founded on all 140-260 available glass density values in the SciGlass information system for glasses containing more than 40 mol% silica, less than 40 mol% boron oxide, varying amounts of Al2O3, Li2O, Na2O, K2O, MgO, CaO, PbO, and minor components. A glass density model based on multiple regression was developed. The 95% confidence interval of the mean model prediction on the density scale in g/cm³ was 0.5-3%, depending on the composition of interest. The prediction of density as a function of temperature made it possible to estimate the coefficient of thermal expansion of glass melts to within 20-40% error with a 95% level confidence.


Glass melt density and thermal expansion calculation program, based on Excel (150 kB)


[1] A. Fluegel, D. A. Earl, A. K. Varshneya, T. P. Seward: "Density and thermal expansion calculation of silicate glass melts from 1000°C to 1400°C"; Phys. Chem. Glasses: Eur. J. Glass Sci. Technol. B, October 2008, vol. 49, no. 5, p 245-257.



Glass Melt Density Calculation by Ghiorso et al.




Density Model Source Data References

Detailed references of the density model source data taken from the SciGlass database and information system are as follows below:


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