One of the essential components of our smartphones is the glass that covers the display and protects it from bumps and scratches. Glass are different. Try to tell whether they differ from each other, and how much of a difference. If there is a difference, what glass is the safest.
Glass made by Corning was established in 2007. In 2012 there was a glass Gorilla glass second generation. A year later came the third generation. Today, most flagship smartphones use Gorilla Glass 5, as presented in 2016. It was recently announced the sixth-generation glass.
The process of making glass from year to year does not change much. The glass becomes stronger due to the presence in the bath of molten salt at a temperature of 400 degrees Celsius. Potassium ions create a layer that adds strength to the glass.
Does not change from year to year and scratch resistance, but the resistance to shocks and falls with each generation of Gorilla Glass is growing. According to Corning, the latest generation of their glass can withstand up to 15 drops from a height of one meter. This is two times more drops than they can endure Gorilla Glass 5.
More popular manufactures Japanese glass manufacturer Asahi. It can be called the second most popular. There are Dragontrail, Dragontrail X and Dragontrail Pro. The latest variation was released in 2016. New glass from Asahi has not yet announced.
Tempered safety glass
There are glass which is glued over the main a glass of your smartphone. Difficult to be sure that all these glasses are manufactured to the same standard, but we hope that most of them are hardened at a temperature of 600 degrees Celsius. These toughened glass are the most affordable to manufacture.
The least available are sapphire glass. They are made from artificially grown crystals in the barrel which is exposed to 2200 degrees Celsius. The process takes about 16-17 days. That’s why the sapphire glass is so expensive. Sapphire has a hardness of 9 on the Mohs scale, while how Gorilla Glass can withstand scratches from objects with a hardness of not higher than 5 on the Mohs scale.
Which glass is better
The difference in scratch resistance between the plates from Corning and Asahi almost none. Sapphire can only be scratched by diamond, and here it wins. Regular tempered glass will lose the battle.
With regard to flexibility and strength, here the situation is different. Sapphire glass will crumble rather than bend. Gorilla Glass is much more flexible. This means that the glass is able to withstand more pressure. Corning assures that the sapphire glass will not be able to withstand over 73 kilograms, while their solution is kept under 195 pounds. Catching up with Corning glass Dragontrail and sapphire glass bypass. Tempered safety glass can not even be considered.
And it turns out that we have to choose between higher scratch resistance and greater tolerance to shock. Manufacturers choosing lower cost, and install glass from Corning and Asahi. Sapphire glass is not used in all products, and not necessarily they are used to protect the screen, but many consumers would not refuse to have a smartphone, the screen is not scratched. However, smartphone users have found their way out. They buy smartphones with Gorilla Glass and put it toughened protective glass.