What is the difference between heat-strengthened glass, annealed glass, and full-tempered glass in terms of fragmentation states?
Heat-strengthened and annealed glass have lower strength levels than full-tempered glass. Therefore, when heat-strengthened glass is impacted, it may crack into large fragments. Annealed glass is even more likely to shatter into long, dangerous shards when impacted. Full-tempered glass is the strongest of the three; when it is largely impacted, it will break into small, rounded fragments that are less likely to cause injury.
Why Heat-Strengthened Glass?
- Improved Strength: The heat treatment improves the glass’s strength, making it less likely to break or shatter in case of impact.
- Durability: It is more durable than standard float glass, making it an excellent choice for safety and security applications.
- Aesthetic Appeal: The clear and transparent nature makes it a popular choice for architectural and interior design applications where aesthetics are essential.
- Energy Efficiency: It has a high thermal resistance, which makes it a good choice for energy-efficient buildings.
When to use it instead of fully tempered glass?
Heat strengthened glass provides higher resistance to thermal stress than annealed glass but is not as strong as fully tempered glass. As a result, it is often used in applications where a higher level of thermal resistance is required, but the full strength of tempered glass is not necessary. This makes it a cost-effective alternative to fully tempered glass in certain situations, such as in some architectural glazing facades, skylights, and display cases. Additionally, it can be cut and drilled, unlike fully tempered glass, making it more versatile for certain types of installations.