What is the use of AS4 and AS6 glass?

AS4 and AS6 glass are specifically designed for use in the rear windows of vehicles, particularly in convertibles. This type of glass is manufactured to provide adequate thermal stability while ensuring safety. Using AS4 and AS6 in convertible rear windows is crucial since these windows need to withstand various environmental factors while also being lightweight and versatile enough for the convertible mechanism.

In contrast, other types of glass are generally used for windshields and side windows, as they require different properties concerning impact resistance and visibility. The distinct characteristics of AS4 and AS6 glass, including their flexibility and ability to handle stresses associated with convertible structures, make them unsuitable for front windshields or side windows, which have specific safety regulations and design requirements.