Gorilla Glass vs Sapphire Glass, which is stronger?

Depending on who and when you ask, the iPhone 6 may or may not ship with a futuristic new Sapphire Glass display. Widely rumored to be nigh-invulnerable, Sapphire Glass is widely believed to be the technology that will make shattered iPhones a thing of the past. But will it really? Seeking answers, the repair experts over at uBreakiFix have taken a piece of Gorilla Glass and a piece of Sapphire Glass through a series of torture tests to see which resists damage better. And the truth is that Sapphire isn’t actually as good as Gorilla Glass in one key scenario.

Repair experts at uBreakiFix have examined the impact resistance, scratch resistance and strength of sapphire glass in a series of tests that were published today. The tests were designed to determine whether sapphire is suitable for use as a smartphone display. The repair technicians conducted three different tests — a scratch resistance comparison using a tungsten carbide drill bit, a drop test with the sapphire display of the newly released Kyocera Brigadier, and a a four-point bend test to compare the failure stress and strain of sapphire glass with that of Gorilla Glass. The results of uBreakiFix’s tests show that sapphire is significantly more scratch resistant and 25 percent stronger than Gorilla Glass, but it is much more susceptible to impacts due to its brittleness. The glass is so brittle that it shattered the first time it was dropped face down from a height of only three feet.