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What is the use of tempered glass and regular glass?

Nov. 25, 2023
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Tempered Glass

Tempered glass, often referred to as toughened glass, undergoes a specialized thermal treatment. This process involves heating the glass to high temperatures and subsequently cooling it rapidly. The result is a glass variant with increased strength and resistance to breakage. Tempered glass is commonly employed in scenarios where safety is paramount.


regular glass

Ordinary glass is primarily made from silica (around 70-75%), soda ash (12-15%), and limestone (5-10%). These raw materials are melted together at high temperatures to form a molten glass.

One of the most distinctive features of ordinary glass is its transparency. It allows visible light to pass through, making it an ideal material for windows, eyeglasses, and various optical devices.

The surface of ordinary glass is smooth and often shiny. This characteristic makes it suitable for applications where a clear view is essential, such as in windows and display screens.


Tempered glass is an extremely versatile and safe material to use in many projects, but what exactly sets it apart from regular glass? In this article, well explain everything there is to know about tempered glass and how it compares to regular glass, as well as give tips on how to differentiate between the two using visual cues.


Tempered glass is about 4 times stronger than regular glass, meaning that it can withstand a lot more pressure before shattering. Regular glass, or annealedglass, will break at around 6,000 pounds per square inch (psi). Meanwhile, tempered glass, according to federal regulations, must have a surface compression of 10,000 psi or more and usually breaks around 24,000 psi.


Tempered glass is cooled rapidly while regular glass cools slowly.

Tempered glass is made by heating up a piece of regular glass to around 620ºC (1,148ºF) and followed up with abrupt cooling using blasts of cold air in a process called quenching.This creates tension on the inside and results in an incredibly strong glass. On the other hand, regular glass goes through a slow cooling process that frees it from this internal stress


Strength and Durability: Tempered glass is significantly stronger than regular glass. The tempering process involves heating the glass to high temperatures and then rapidly cooling it, creating internal stresses that strengthen the glass. This makes tempered glass more resistant to breakage, impacts, and thermal stress.


Safety: In the event that tempered glass does break, it shatters into small, blunt fragments rather than sharp shards. This reduces the risk of injury, making it a safer option for applications where safety is a concern, such as in doors, windows, and shower enclosures.


Thermal Resistance: Tempered glass has better thermal resistance compared to ordinary glass. This property makes it suitable for use in environments with extreme temperature changes without the risk of cracking or breaking.


Scratch Resistance: Tempered glass is more resistant to scratches and other forms of damage, maintaining its clarity and appearance over time. This makes it a practical choice for items like phone screens, tabletops, and display cases.


Versatility: Due to its strength and safety features, tempered glass is versatile and can be used in a variety of applications, including architectural glass, automotive windows, and household items.


When choosing glass for specific applications, the enhanced properties of extended tempered glass make it a favorable option for those prioritizing durability, safety, and overall longevity.



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