The basic properties of the glass:

• the substance an amorphous there is no structured internal construction
• There is no constant melting point
• isotropic material
• weak Guide to electricity
• material with a high chemical resistance (it is not resistant to hydrofluoric acid)
• mechanical properties of glass work:
  • Mons scale hardness of 5-7
  • the density of construction glass 2400-2600 kg/m³
  • flexural strength 30 – 50 MPa
  • compressive strength of 800-1000 MPa
  • Young’s modulus GPa 70

The properties of the glass are dependent on how the cast and to a limited extent from the chemical composition.