SciGlass : Detailed Features and Pathways : SciGlass Calculator

  The SciGlass calculator is a unique feature of the SciGlass 6.5 Information system. It allows for calculating properties for glasses whose composition is specified by the user.

Calculating Glass Properties with SciGlass Calculator  


With the SciGlass calculator the following properties can be predicted:

  • Density (oxide glasses and melts, fluoride and chalcogenide glasses)
  • Thermal expansion coefficient (oxide and chalcogenide glasses)
  • Heat capacity at 5...2000 K (oxide glasses and melts)
  • Heat capacity jump in the glass transition range (oxide glasses)
  • Thermal conductivity at -100...+400C  (silicate glasses)
  • Refractive index at 20C  (oxide, fluoride and chalcogenide glasses)
  • Mean dispersion at 20C (oxide and fluoride glasses)
  • Abbe's number at 20C (oxide and fluoride glasses)
  • Viscosity (10...1013 P) (oxide melts)
  • Littleton point (softening temperature) (oxide melts)
  • Annealing point (oxide glasses)
  • Strain point (oxide glasses)
  • Mg (oxide and chalcogenide glasses)
  • Glass transition temperature (Tg) (oxide and chalcogenide glasses)
  • Shear modulus (oxide glasses at 20oC, some silicate glasses at 20-500oC)
  • Young modulus (oxide glasses at 20oC, some silicate glasses at 20-500oC)
  • Poisson’s ratio at 20oC (oxide glasses)
  • Ultrasonic velocity at 20C (longitudinal and transverse directions) (oxide glasses)
  • Surface tension at 900...1600C (oxide melts)
  • Electrical resistivity (silicate glasses and melts, chalcogenide glasses)
  • Dielectric constant at 20C (silicate glasses)
  • Liquidus temperature (soda-lime-silica glasses)
  • Microhardness (chalcogenide glasses)

Calculation Methods Available in SciGlass Calculator


About 100 existing methods of property calculations are included in the program. In addition, a new calculation method, Priven-2000, is introduced in SciGlass. With this method, the wide variety of properties for a broad range of glass compositions (up to 64 oxides) can be calculated. This method also calculates viscosity for glass-forming melts.

The Calculator has additional useful options that enable one to calculate the molecular weight of the specified glass composition and to convert density into molar volume and temperature in °C to reciprocal absolute temperature in 10-4 K-1 and vice versa. .


Tables of Calculation Results

There are two modes of displaying the table of calculation results: All Methods, and Priven-2000.


Results in All Methods Mode.

There is a possibility to display a table with the values of the property of interest calculated by all the methods available in SciGlass.

The user has the possibility to select preferable units for the property values.


Results in Priven-2000 Mode.

About 50 property values, calculated with the
Priven-2000 method
are displayed.





Additionally, you can build the temperature dependence for a user-selected glass property. This feature is available for the properties ending on (T).