Heat strengthened glass is generally twice as strong as standard annealed glass, while full tempered glass is typically four to six times stronger than annealed glass. Often of high importance is that full tempered glass imparts the safety dicing pattern when broken.
Heat strengthened glass is produced by heating the glass and then rapidly cooling it with air. The resultant glass is thermally strengthened and approximately 2 times stronger than a piece of annealed glass.
Toughened or tempered glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass. Tempering puts the outer surfaces into compression and the inner part is in tension. Such stresses cause the glass, when broken, to crumble into small granular chunks instead of splintering into jagged shards. The granular chunks are less likely to cause injury.
Many sellers and buyers of cell phone screen protectors may not be aware of this. More times than not, a factory from overseas will give a customer the price they want and just label a non-tempered glass " tempered glass" to make the sale.Extremely price driven folks are the ones that get in to this situation.
And lastly, they all say “tempered glass” and that is not always true. Heat strengthened glass will not protect your LCD screen.
Bottom Line is, if it is not a real tempered glass on your phone right now, it will not protect your screen and it is also not safe. See Picture Below!
Click For Real Tempered Glass
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