Fully tempered glassThis glass type can be manufactured from float glass or practically every known flat structured ornamental and cast glass.
Heat-soaked tempered glassEach basic glass contains extremely low quantities of nickel sulphide (NiS) crystals, which are inevitably introduced into the glass via the raw materials. In normal annealed float or patterned glass, these crystals do not have any relevance.
Implementation recommendationDetailed specifications for glass construction and the dimensioning of glass are based on the respective rules and are not stated here in detail.
Interior/exterior safetyClear regulation parameters govern the installation of glass elements in areas where there is a risk of falling.
Laminated safety glassSince its invention in 1909, and after more than a century of continuous improvement, laminated safety glass is a key component in the realisation of modern architecture.
Our product: LamiGlassGuardian LamiGlass®comprises two or more panes of glass bonded together using clear PVB interlayers.
Partially tempered glassProduction is the same as for fully tempered glass, but the cooling process is slower, which means that the stress differences in the glass are lower.
Partially tempered glass
Production is the same as for fully tempered glass, but the cooling process is slower, which means that the stress differences in the glass are lower.
Production is the same as for fully tempered glass, but the cooling process is slower, which means that the stress differences in the glass are lower. You could even rank heat strengthened glass between float and fully tempered glass. The values for thermo-shock resistance and the flexural tensile strength are proof of this.
Slower cooling down during the production process vastly reduces the potential risk of a spontaneous breakage by NiS inclusions.
The structure after a fracture occurs is similar to that of a float glass pane. The fracture radiates outward from the point where the impact/fracture occurred, to the edges of the pane. Typically, “islands“ (larger fragments) and “particles“ (small fragments) should be avoided by adjusting the process parameters in order to ensure that the glass remains in the frame after breakage.
The test procedures and limitations on “islands“ and “fragments“ are defined in EN 1863-1.
Important note: monolithic heat strengthened glass is not a safety glass!
Due to the fracture characteristics of heat strengthened glass, which are different from tempered glass, a single unit of laminated safety glass made from heat strengthened glass has excellent residual load-bearing properties.
In the event of failure of one of two heat strengthened panes in laminated safety glass, only minor deflection occurs, contrary to the sagging of laminated safety glass made from tempered glass. This is why heat strengthened glass is increasingly replacing tempered glass in laminated glass when increased flexural tensile strength and alternating temperature loading are required.
Heat strengthened glass made from float glass
σ = 55 Mpa
Heat strengthened glass made from patterned glass
σ = 55 Mpa
Heat strengthened glass made from enamelled glass, whereby the enamelled side is under tensile stress
σ = 45 Mpa
The failure strength of a heat strengthened glass against temperature differences within one glass pane is 100 K (annealed float glass: 40 K). This makes heat strengthened glass suitable for any application where there is increased risk of thermally induced breakage.