Is Toughened Glass Breakable? Everything You Need To Know About Toughened Glass

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Glass has become an integral part of our everyday lives, adorning our windows, doors, and even our smartphones. 


As technology advances, so does the demand for stronger and safer glass materials. 


Toughened glass has emerged as a popular choice due to its enhanced strength and safety features. 


But is toughened glass truly unbreakable? Let’s delve into the world of toughened glass to understand its properties and limitations.


What is Toughened Glass?


Toughened glass, also known as tempered glass, is a type of safety glass that undergoes a specialised thermal or chemical treatment to increase its strength compared to regular glass. 


The tempering process involves heating the glass to a high temperature and then rapidly cooling it, creating internal stresses that give the glass its unique properties.


Is Toughened Glass Breakable?


It is essential to note that toughened glass is not entirely unbreakable. While it is highly durable and resistant to impact, it does have its limitations.


Extreme force or impacts from sharp objects can still cause toughened glass to break. The key difference lies in how it breaks compared to regular glass. Toughened glass fractures into small, blunt-edged pieces, significantly reducing the risk of severe injuries.

Toughened Glass: Advantages


One of the primary advantages of toughened glass is its increased resistance to breakage. It is designed to be four to five times stronger than ordinary annealed glass. When toughened glass does break, it shatters into small, relatively harmless pieces instead of sharp shards, reducing the risk of injury. This property is particularly crucial in applications where safety is a concern, such as vehicle windows, shower doors, and glass tabletops.

Another crucial characteristic of toughened glass is its resistance to thermal stress. The tempering process creates a balance of internal stresses, making the glass more resistant to rapid temperature changes. This property makes toughened glass suitable for applications that involve exposure to high temperatures, such as oven doors, fireplace screens, and stovetop panels. However, it is important to note that even toughened glass has its limits, and subjecting it to extreme thermal stress, such as direct contact with an open flame, can cause it to break.


Another significant advantage of toughened glass is its versatility. It can be customised to meet specific requirements, including different shapes, sizes, and thicknesses. It can also be further enhanced by adding additional features like laminated interlayers for improved sound insulation or low-emissivity coatings for enhanced energy efficiency.


Maintenance of Toughened Glass


When it comes to maintaining toughened glass, regular cleaning with mild soapy water or glass cleaners is usually sufficient


Abrasive materials or harsh chemicals should be avoided, as they can potentially damage the glass surface or its coatings.


Final Thoughts


In conclusion, toughened glass is indeed stronger and more resistant to breakage than regular glass. 


It offers improved safety by shattering into small, relatively harmless pieces when it does break. 


However, it is not invincible, and extreme force or impacts from sharp objects can still cause it to break. Understanding the limitations of toughened glass is crucial to ensure its appropriate and safe usage in various applications.


Why Choose Prentice Glass?

At Prentice Glass, our glass specialists provide an array of services, including the installation of toughened glass. We take into account all safety glass regulations, making sure that our projects meet all inspections. 


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