The difference between tempered glass and semi-tempered glass
What is semi-tempered glass?
Semi-tempered glass is also known as heat-enhanced glass. Semi-tempered glass is a variety between ordinary flat glass and tempered glass, it has some of the advantages of tempered glass, such as high strength than ordinary float glass, being two times the ordinary float glass, while avoiding the poor flatness of tempered glass, easy to explode, once the destruction of the whole crushed and other unsatisfactory shortcomings. Semi-tempered glass destruction, radial cracking along the source of the crack, generally no tangential crack expansion, so the destruction of the general situation can still maintain the overall not collapse.
A single piece of semi-tempered glass (heat-enhanced glass) does not belong to the safety glass, because once broken, it will form large fragments and radial cracks, although most fragments do not have sharp corners, still can hurt people, can not be used for skylights and the possibility of human impact occasions
The difference between tempered glass and semi-tempered glass
Tempered glass is annealed glass through high temperature and quenching and cooling, the surface layer formed strong compressive stress, so that the mechanical strength of the glass increased several times, that is, tempered glass. The surface stress of tempered glass is 69~168 Mpa, which is characterized by small blunt particles after rupture and does not cause significant harm to the human body. The strength is 4 times more than the strength of ordinary glass. It has good thermal stability, and the temperature difference that ordinary glass can withstand after tempering treatment is about 180 C. The disadvantage of tempered glass is that it is easy to explode and has poor flatness.
Semi-tempered glass is annealed glass through high temperature and quenching and cooling, the surface layer formation of less than 69MPa compressive stress, so the mechanical strength of the glass increased several times, that is semi-tempered glass. The surface stress of semi-tempered glass is 24~69Mpa. After breaking, it is the same as ordinary glass, and the product features that the strength of semi-tempered glass is more than 2 times that of annealed glass. Safety: The fragments are radial when broken, and each fragment extends to the edge, which is not easy to fall off and is safer, but is not safety glass. Deflection: The deflection of semi-tempered glass is smaller than tempered glass than annealed glass. Thermal stability: thermal stability is also significantly better than annealed glass, ordinary glass semi-tempered treatment can withstand the temperature difference of about 75 C. The semi-tempered glass will not explode.
The use of semi-tempered glass
Semi-tempered glass is suitable for curtain walls and exterior windows in buildings and can be made into coated glass, whose image distortion is better than tempered glass.
HHG is a professional glass manufacturer and glass solution provider that include a range of tempered glass, laminated glass, textured glass, and etched glass. With more than 20 years of development, there are two product lines of pattern glass, two lines of float glass, and one line of restoration glass. our products are 80% ship to overseas, All our glass products are strict quality control and carefully packed in strong wooden cases, ensuring you receive the finest quality glass safely in time.
More Detail: www.hhglass.com
