ClimaGuard Tempered Glass
4 to 5 times stronger than annealed glass.
Fully tempered ClimaGuard glass is approximately four to five times stronger than annealed glass of the same thickness and configuration, residual surface compression must be over 10,000 PSI for 6mm, according to ASTM C 1048. When broken, it will break into many relatively small fragments, which are less likely to cause serious injury. The typical process to produce tempered glass involves heating the glass to over 1,000 degrees F, then rapidly cooling to lock the glass surfaces in a state of compression and the core in a state of tension.
Tempered glass is often referred to as “safety glass,” because it meets the requirements of various code organizations. This type of glass is intended for general glazing, and safety glazing such as sliding doors, storm doors, building entrances, bath and shower enclosures, interior partitions, and other uses requiring superior strength and safety properties. Tempered glass cannot be cut or drilled after tempering, and any alterations, such as edge grinding, sand blasting or acid etching, can cause premature failure.
One of the most commonly recognizable code organizations is the Consumers Product Safety Commision (CPSC) that has set standard 16 CFR 1201 Category I and Category II designations for glass that is subject to human impact. Category I is for glass products with an area not greater than 9 square feet and must endure a 100lb. bag dropped from 18 inches (a 150 foot-pound impact). To pass the standard, there must be a) no fracture, or b) if the glass fractures, the ten largest glass particles must weigh no more than 10 square inches of the original glass tested. Category II is a more stringent test for any glass product subject to human impact and must endure a 100lb. bag dropped from a height of 48 inches (a 400 foot-pound impact). To pass this standard, there must be a) no fracture, or b) if the glass fractures, the ten largest glass particles must weigh no more than 10 square inches of the original glass tested.
|SHGC||Argon||Air||Cat. I||Cat. II|
|Guardian Neutral 70||70%||12%||12%||48%||0.559||0.290||0.331||Yes||Yes|
|Guardian Neutral 70 (#3)||70%||12%||12%||48%||0.674||0.290||0.331||Yes||Yes|
Double glazed: 3.1mm Clr tempered, 1/2" Air Space, 3.1mm Clr tempered: Air and 90% Argon/10% Air Filled Units