The difference between tempered and ordinary glass.

The difference between tempered glass and ordinary glass is mainly reflected in the following aspects:

Safety: After the tempered glass is broken, the fragments will be broken into small particles, and there will be no sharp fragments, so even if the tempered glass is broken, it is relatively safe. Ordinary glass will produce knife-like sharp corners after breaking, which makes it easy to cut people.

Strength: There is uniform compressive stress on the surface of tempered glass, and there is tensile stress inside, which makes tempered glass have higher tensile strength and impact resistance than ordinary glass. The strength of tempered glass is about 4-5 times that of ordinary glass.

Temperature difference resistance: Tempered glass has stronger temperature difference resistance, generally reaching above 135℃, while ordinary glass has average temperature difference resistance, and the temperature difference should not exceed 70℃.

Appearance characteristics: Tempered glass is fired at high temperatures, and the edge is smoother than ordinary glass, without edges or thorns. The surface flatness will change. The surface of tempered glass below 10 mm will have a slightly wavy state. The surface flatness of ordinary glass is in its original state, which is flatter than tempered glass.

Sound test: When you tap the glass with your knuckles, the sound of tempered glass is relatively crisp. This is because the tempered glass is subjected to high-temperature treatment during the processing, which greatly enhances its hardness.

Price and usage scenarios: Due to the additional cost of the tempering process, the price of tempered glass is usually higher than that of ordinary glass. Tempered glass is mostly used in places that require higher safety, such as automotive glass, building exterior walls, shower rooms, etc., while ordinary glass is commonly used in places that do not withstand impact, such as window glass and photo frames.

The above methods can be used to distinguish tempered glass from ordinary glass. Among them, observing the edges, surfaces, sound tests, and breaking to see the fragments can help to preliminarily determine the type of glass.