Tempered glass is stronger than regular glass because it undergoes a specific heat treatment that makes it harder and more durable against impacts and temperature changes.
Tempered glass is a highly resistant material widely used in various applications, such as smartphones, car windshields, and shower panels. Its composition differs from that of ordinary glass, giving it its unique properties. Tempered glass is mainly composed of silicon dioxide (SiO2), with the addition of small amounts of metal oxides such as alumina (Al2O3) and magnesia (MgO). This specific composition gives tempered glass its strength and resistance to impacts.
The glass tempering process begins by heating ordinary glass to very high temperatures, usually around 600 to 700 degrees Celsius. Once the glass is sufficiently heated, it is rapidly cooled using a blast of air or by plunging it into a bath of oil or water. This rapid cooling creates internal stresses that increase the strength of tempered glass.
This tempering process alters the molecular structure of the glass by keeping it under significant compressive stress on the surface. This compression acts as a shield in case of impact, dissipating the energy and allowing the tempered glass to better withstand mechanical stresses. However, if the tempered glass is damaged, for example by being deeply scratched, this compression can cause it to fragment into small, non-sharp pieces, unlike ordinary glass which would break into large sharp shards.
Tempered glass is distinguished by an internal structure under tension, the result of the thermal tempering process. This particular structure makes tempered glass a material up to five times stronger than ordinary glass against impacts. In case of breakage, tempered glass breaks into small, rounded and less sharp pieces, reducing the risk of injuries considerably. Its increased resistance also makes it more resistant to temperature variations, thermal shocks, and mechanical stresses. Because of these properties, tempered glass is widely used in applications requiring high strength and enhanced safety, such as car windows, smartphone screens, and glass doors.
Tempered glass has a much higher resistance than ordinary glass due to its internal structure. Unlike ordinary glass, tempered glass undergoes a tempering process that makes it much harder and more shock-resistant. Tempered glass is about five times stronger than ordinary glass. In case of breakage, tempered glass shatters into small non-sharp pieces, which significantly reduces the risk of injuries compared to the sharp shards of ordinary glass. Tempered glass is also more resistant to scratches and bending, making it a popular choice for applications requiring greater strength and safety.
Tempered glass is used in the manufacturing of car windows for their impact resistance and ability to shatter into small pieces without creating large dangerous shards.
The process of glass thermal tempering was discovered by accident in 1874 by a French chemist named François Barthelemy Alfred Royer de la Bastie.
Tempered glass is also used in the manufacturing of smartphone screens to protect against scratches and impacts.
Tempered glass is more resistant to impacts and scratches than ordinary glass.
Tempered glass is favored for its increased resistance to damage and durability, making it ideal for portable electronic devices.
The rapid cooling of tempered glass creates a compressive pressure on its surface, making it harder and more resistant.
Yes, tempered glass is generally more expensive due to its specific manufacturing process.
Tempered glass is more resistant to shattering, and in case of breakage, it shatters into small pieces that are less dangerous than ordinary glass, which breaks into large pieces.
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