Density: 2501 kg/m3
A 10mm thick panel 26” by 76” glass weighs 41 lbs
Hardness: Mohs Hardness 4-7
Modulus of elasticity: 69998 MPa
The modulus of elasticity is either determined from the elastic elongation of a thin bar, or from bending a bar with a round or rectangular cross section.
Compression resistance: 803-1002 MPa
The compression strength defines the ability of a material to resist a load applied vertically to its surface
Bending strength: 45.5 MPa
The bending strength of a material is a measure of its resistance during deflection. It is determined by bending tests on glass plate using the double ring method according to DIN EN 1288-5. The main characteristics of glass are transparency, heat resistance, pressure and breakage resistance and chemical resistance.
Transformation range: 520 – 550°C
Temp & Softening temperature: Approx. 600°C
Contrary to solid bodies of crystalline structure, glass has no defined melting point. It continuously transforms from the solid state to the viscous plastic state. The transition range is called the transformation range and according to DIN 52324 (ISO 7884), it lies between 520°C and 550°C. Tempering and bending require a temperature of a further 100°C.
Specific Heat : 0.8 J/g/K
The specific heat (in joules) defines the amount of heat required to raise the temperature of 1g of float glass by 1K. The specific heat of glass increases slightly the temperature is increased up to the transformation range.
Thermal conductivity : 0.8W/mK
Thermal conductivity determines the amount of heat required to flow through the cross-sectional area of the float glass sample in unit time at a temperature gradient.
Thermal expansion: 9.10-6 K-1
There is a difference in the expansion behaviour of a body under the effect of heat between linear expansion and volumetric expansion. With solid bodies, the volumetric expansion is three times that of linear expansion. The temperature coefficient of expansion for float glass is given according to DIN 52328 and ISO 7991.
The main characteristics of glass are transparency, heat resistance, pressure and breakage resistance and chemical resistance.