Discover the impressive heat resistance of toughened glass. This article explores its ability to withstand high temperatures, the manufacturing process, and ideal applications. Learn how toughened glass combines safety and durability, making it a perfect choice for a variety of environments. Optimize your projects with our insights!

 

 

The high temperature resistance range of ordinary tempered glass is usually between 200℃ and 250℃.

 

Within this temperature range, tempered glass can maintain its original physical and chemical properties without cracking or deformation‌

 

However, different tempered glass may have different high temperature resistance due to differences in material, thickness and production process. Some high-quality tempered glass or tempered glass of special materials (such as potassium soda-lime tempered glass and titanium tempered glass) may be able to withstand higher temperatures, and their high temperature resistance range may reach 250~300℃ and above 350℃ respectively‌

 

In addition, the high temperature resistance of tempered glass is also affected by other factors, such as the rate of temperature change and the stress distribution inside the glass. Rapid temperature changes may cause tempered glass to crack. Therefore, when using tempered glass, in addition to considering its high temperature resistance range, you also need to pay attention to avoid rapid temperature changes‌. 

 

 

 

 

What is Tempered Glass: 

 

Tempered glass, also known as toughened glass, is a specially treated glass designed to withstand higher levels of stress and impact compared to standard glass. The tempering process involves heating the ordinary float glass to high temperatures and then rapidly cooling it. This thermal tempering alters the internal structure of the glass, enhancing its strength and making it a preferred choice for various applications in both residential and commercial settings.

The process of tempering glass is a meticulous one, transforming ordinary glass into a highly durable material. To create toughened glass, raw glass sheets are first heated to a temperature range of approximately 600°C to 700°C (about 1112°F to 1292°F). After being subjected to this heat, the glass is quickly cooled using a process known as quenching. This rapid cooling creates a difference in temperature throughout the glass, resulting in high compressive stresses on its surface while maintaining tensile stress within. The resulting tension gives toughened glass its remarkable resistance to breaking.

 

 

 

Advantages and Disadvantages of Tempered Glass: 

 

--Advantages of Tempered Glass

 

High strength and safety‌: The impact strength of tempered glass is 3-5 times that of ordinary glass, and the bending strength is also 3-5 times that of ordinary glass. When tempered glass is damaged by external force, the fragments will be broken into small obtuse-angled particles similar to honeycombs, which are less likely to cause harm to the human body.

 

Thermal Stability‌: Tempered glass can withstand temperature changes of up to 150°C, which is 3 times that of ordinary glass, effectively preventing thermal explosion.

 

Wide application‌: Due to its high strength and safety, tempered glass is widely used in construction, home decoration-home appliances glass and kitchen appliances glass, automobile and other fields, such as high-rise building doors and windows, glass curtain walls, indoor partition glass, sightseeing elevator channels, furniture, glass guardrails, etc.

 

--Disadvantages of Tempered Glass: 

 

Cannot be reprocessed‌: Tempered glass cannot be cut drilled and processed after tempering. The glass must be processed to the required size and shape before tempering.

 

Risk of self-explosion‌: Although tempered glass has high strength, it may self-explode when the temperature difference changes greatly, while ordinary glass does not have this problem. The self-explosion rate of tempered glass sheets is about 3‰, mainly caused by nickel sulfide impurities contained in the glass.

 

Surface defects‌: The surface of tempered glass may be uneven (wind spots), slightly thinned, and may deform after tempering, affecting the decorative effect.

 

 

 

 

Applications of Tempered Glass: 

 

Tempered glass is widely used in many fields due to its excellent physical and chemical properties. ‌‌

 

Construction Field

In the construction field, tempered glass is commonly used in curtain walls, doors, windows, partitions, stair handrails, ceilings and glass walls. Tempered glass not only has high strength, but also will not break into sharp fragments when subjected to external impact, but will become small particles without sharp corners, making it safer and more reliable. In addition, tempered glass is used in greenhouses and ceiling glazing in modern buildings, as well as as unsupported sheathing and load-bearing material.

 

Auto Industry

The automotive industry is one of the important application areas of tempered glass. Automotive glass has developed from the original thick sheet tempering to thin tempering and coating, special-shaped tempering, etc. The use of coated tempered glass increases the privacy and comfort in the car. At the same time, low-emissivity tempered glass reduces solar energy entering the car in summer and reduces the use of air conditioning.

 

Aviation Field

The aviation field was one of the first fields to use tempered glass. Aircraft glass is generally a composite structure, such as organic or inorganic composite laminated glass, or is coated on the glass surface to make electrically heated anti-icing and defogging glass, stealth glass, etc. Tempered glass has high impact resistance and can withstand the impact of high-speed objects.

 

Household Appliances and Daily Furniture

In the field of household appliances or kitchen appliances, tempered glass is often used in panels and door edges of induction cookers, microwave ovens, ovens, dish washing machine, refrigerators, washing machines and other intelligent household appliances. It can withstand high temperatures, resist wear and tear, and is easy to clean. In addition, tempered glass is also used in bathroom doors, enclosures, basins and bathtubs, etc.

 

 

 

Electronics Industry

In the electronics industry, tempered glass is used in touch screens, display protection and optical lenses. It is heat-resistant, impact-resistant, flame-retardant and anti-static, effectively protecting the screen from wear and tear.

 

 

 

Other Areas

Tempered glass is also used in public places such as shadowless lamp protective glass for medical equipment, heat-resistant glass screens for printing machinery, museum display cabinets, and commercial counters. These applications not only take advantage of its wear-resistant and heat-resistant properties, but also take safety into account.

 

About Huide Glass: 

 

Huide Glass has been in that processing business of tempered glass sheets products for around 13 Years since 2011. We have strong production and development capabilities, and currently has 7 automatic cutting machines, 8 edge grinding lines, there are 8 CNC precision grinding processing centers; there are 3 tempering furnaces(one for North-Glass, one for Yihai, and one for continuous tempering furnace SOUTHTECH). we can fabricate tempered glass sheet products 3,000,000 square meter per year. 

 

 

Our tempered glass products includes tempered glass shelf for refrigerator, tempered glass door for refrigerators, tempered glass lid for household washing machines, tempered glass sheet for smart tea table top or bedside table top, tempered glass cover panel for water cleaner and water heater, tempered glass cover for advertising billboard, tempered glass top and front door panel for tea bar machine, tempered glass door sheet for ovens, tempered glass sheet for gas stoves, tempered glass cover panel for display cabinet, display box, or tempered glass cover sheet for showcase counter,etc, and also we can do customized manufacturing according to your unique real applications. if you want to know more, don't hesitate to contact us.