The method of manufacturing Topline Heat Strengthened Glass is similar to that of Tempered Glass, except that Heat Strengthened Glass is cooled less rapidly. The residual surface compression level of Heat Strengthened Glass is within the range of 24 MPa to 52 MPa, following the MS 1498 Standard. As a result, Topline Heat Strengthened Glass is twice as strong and can withstand greater impact compared to ordinary glass. When the glass breaks, the pattern is similar to that of ordinary glass, but the fragments of Heat Strengthened Glass lock together and remain in the frame. Topline Heat Strengthened Glass also offers good resistance to thermal stress, though its resistance is lower than that of Tempered Glass.
According to Malaysian Standards, Heat Strengthened Glass must be laminated to be classified as safety glass.
Standard Certified – MS 1498
Characteristics
Strength – Topline Heat Strengthened Glass is twice as mechanically strong as annealed glass of the same size and thickness.
Resistance To Thermal Shock – Most glasses used in façades and window glazing have high energy absorption factors, which may cause glass breakage due to thermal shock. However, Topline Heat Strengthened Glass can withstand high temperature changes.
Low Surface Distortion – Due to its lower processing temperature and cooling pressure, Topline Heat Strengthened Glass has fewer optical distortions than tempered glass. The strengthening method improves the smoothness and optical quality of processed glass.
Less Tendency Of Spontaneous Breakage – “Spontaneous breakage” occasionally occurs in tempered glass due to the possible presence of nickel sulfide. Topline Heat Strengthened Glass is less sensitive to this issue.
Application for Topline Heat Strengthened Glass
- Building façade
- Spandrel glass
- Condominiums
- Commercial buildings
- Combination with laminated glass
- Use in the exterior and interior of double glazing units