Tempered Glass Vs Standard Glass
Tempered glass is processed in a different way than the standard type. All types of glass are manufactured by mixing lime, sand and soda ash, and then melting them at extremely high temperatures. The resulting liquid is shaped into glass by means of blowing, drawing or pressing. When the glass is formed, it undergoes an annealing process, where it is heated again then cooled. This protects it from breaking and strengthens it, as well.
The annealing process, which is also known as cooling, determines if glass can be tempered or not. Standard type is cooled slowly while the tempered kind is cooled rapidly. When glass is cooled, it becomes more durable to withstand four times the pressure of regular type. Moreover, it responds to breakage in a different way.
These two types of glass are obviously different in the way they break or shatter. Tempered glass breaks into small pieces that are evenly shaped, posing less risk of injury to people who come in contact with them. On the other hand, standard glass breaks into large, sharp pieces of different shapes, making them more harmful.
Standard glass breaks in the particular area of contact, causing a hole or cracks in only one spot while leaving the rest intact. Tempered glass is more resistant to impact. However, it could shatter totally without leaving any intact areas. For this reason, they are chosen whenever safety is a top priority. Standard glass offers more security since there are parts that will stay intact even if a certain section gets broken.
Tempered glass is more resistant to both heat and scratches as compared to non-treated glass. However, its outward appearance looks similar to that of standard glass. Both types can be tinted and colored, plus, they are available in a range of sizes and thickness.
After processing, standard glass it can be cut into the preferred size or pressed into the desired shape. Its edges can also be polished or holes can be drilled into it. Once tempered, glass can no longer be modified. Any drilling or cutting attempts can shatter it completely.
Since tempered glass is stronger and safer than regular glass, it used to be the standard for glass doors and car windows. Laminate glass is more commonly used these days, when the highest degree of safety is needed. To form laminate glass, two layers of glass are jointly fused with a plastic sheet in the middle, resulting to a more durable glass. Laminate glass will crack when facing extreme force situations. However, it will not shatter.