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Nice and clened rapid metro stationGorilla Glass is a brand of specialized toughened glass developed and manufactured by Corning, now in its fifth generation,[1] designed to be thin, light and damage-resistant. Gorilla Glass is unique to Corning, but close equivalents exist, including Asahi Glass Co. Dragontrail and Schott AG Xensation.[2][3]The alkali-aluminosilicate sheet glass is used primarily as cover glass for portable electronic devices, including mobile phones, portable media players, portable computer displays, and television screens.[4] It is manufactured in Harrodsburg, Kentucky, US; Asan, Korea;[5] and Taiwan.The glass gains its surface strength, ability to contain flaws, and crack-resistance by being immersed in a proprietary, hot potassium salt ion-exchange bath.Corning experimented with chemically strengthened glass in 1960, as part of a Project Muscle initiative. Within a few years they had developed a muscled glass[6] marketed as Chemcor. The product was used until the early 1990s in commercial and industrial applications, including automotive, aviation and pharmaceutical uses,[6] notably in approximately one hundred 1968 Dodge Dart and Plymouth Barracuda racing cars, where minimizing the vehicles weight was essential.[7] Experimentation was revived in 2005, investigating whether the glass could be made thin enough for use in consumer electronics. It was brought into commercial use when Apple asked Corning for a thin, toughened glass to be used in its new iPhoneAs of October 2017, some five billion devices globally contain Gorilla Glass.[10] While dominating its market, Gorilla Glass faces varying competition from rivals such as Dragontrail and sapphire glassCorning further developed the material for a variety of smartphones and other consumer electronics devices for a range of companies.[15][16][17]The manufacturer markets the materials primary properties as its high scratch-resistance (protective coating) and its hardness (with a Vickers hardness test rating of 622 to 701),[18] which allows the glass to be thin without fragility. It can be recycled.[15]By 2010, the glass had been used in approximately 20% of mobile handsets worldwide, about 200 million units.[19] The second generation, called Gorilla Glass 2, was introduced in 2012. On October 24, 2012, Corning announced that over one billion mobile devices used Gorilla Glass.[20] Gorilla Glass 2 is 20% thinner than the original Gorilla Glass

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