Safety glass is used in all automobile glass. … The side and rear windows are made of tempered glass, which is produced by heating the glass to more than 1,100°F and then rapidly cooling it. This “tempering” process makes the glass many times stronger than un-tempered glass of the same thickness.
What part of a car has tempered glass?
Tempered glass is most commonly used for passengers windows on cars while laminated glass makes up your front and rear windshield most of the time. When tempered glass breaks, it is designed to shatter into small pieces that are less likely to cause added injury or damage.
When was tempered glass used in cars?
By 1937, safety glass became mandated for all cars. Changes occurred slowly throughout the years with innovations like the curved windshield from Studebaker in the 1940s. Manufacturers began using tempered glass for side and rear windows in the 1950s.
Do old cars have tempered glass?
From 1936 to 1959, United States manufacturers used laminated safety glass in all windows except the rear window. … Unlike safety glass, tempered glass shatters when broken. Tempered glass breaks upon contact and when the car roof is deformed.
How do I know if my car has tempered glass?
To find out whether your car has tempered or laminated side windows, read the label in the bottom corner the window, or check directly with the manufacturer. Make sure to check every window, as it’s common for at least one side window to be made from breakable tempered glass.
What can break tempered glass?
Spontaneous breakage of tempered glass is most commonly caused by chipped or nicked edges during installation, stress caused by binding in the frame, internal defects such as nickel sulfide inclusions, thermal stresses in the glass, and inadequate thickness to resist high wind loads.
What is safety glass on a car?
Safety glass is used in all automobile glass. It is manufactured to reduce the likelihood of injury, if it breaks. Windshields are made from a lamination process. The windshield glass in your car is made of laminated glass, which is designed to offer highest levels of safety in the event of a crash.
Do car windows stop if something is in the way?
If it detects an obstacle in the way, it triggers the anti-pinch function and reverses the window direction. It will either roll the window completely down, or roll down a few inches and stop.
Does tempered glass Flex?
In some cases, the glass will move freely in the center. Pressure from the other side can come from a change in barometric pressure, air temperature or wind. It’s important to note that tempered glass with movement meets all safety glass requirements.