Tempered glass is rarely used for which application?

Tempered glass is not commonly used for windshields due to the specific safety and structural requirements of that application. Windshields must be made from laminated safety glass, which consists of two layers of glass with a layer of vinyl in between. This construction helps prevent shattering and provides a clear barrier to maintain visibility and passenger safety during an accident. On the other hand, tempered glass is designed to break into small, dull pieces when shattered, which could pose a risk in the event of a collision.

In contrast, tempered glass is frequently utilized in applications like windows, shower doors, and glass doors, where the production method allows for increased strength and safety benefits. These applications are generally designed to withstand higher impact and thermal stress but do not require the same laminated construction as windshields. Thus, the choice for windshields being made from laminated glass instead of tempered glass establishes it as the rare application for tempered glass.