Smartphones usually come with screens that are around 5 to 6 on Moh's scale so that objects like knives, coins, and keys can't scratch them. The table below shows Moh hardness scale. The codes are given based on the hardest pencil that fails to scratch the surface. Testing various displays, we use pencils that have a lead hardness ranging from 6b to 9h, pressed against the surface at a 45-degree angle. From soft to hard pencil, pencil hardness ranges from 9b to 9h. Hence, we analyze the hardness based on the scratch the hardest pencil has on the screen. Of course, it makes no sense comparing a glass material with a pencil. When a manufacturer claims that their screen is 9h, it means the screen can resist scratches from the hardest pencil. To find a rating, you use the pencil test, which compares the relative hardness of a screen. The suffix means the hardness of a pencil. The scale is represented by numbers only without the "H" suffix. Friedrich Mohs invented this scale in 1812, and it ranges from 1 to 10 with glass around 5 and diamond at the top of the scale. 9h refers to the Moh scale of mineral hardness. Many people use the tempered glass today without knowing what 9h hardness is. In this article, we’re looking at screen protector hardness and what you need to know to purchase a reliable protector.īreaking down tempered screen protector hardness What is 9h hardness? Nonetheless, if you don't know what this label means, then your probably asking yourself, “What is 9h hardness?” You may have seen the hardness rating on different packaging. Screen protectors are made of polyethylene terephthalate (PET) or thermoplastic polyurethane (TPU), or laminated tempered glass, similar to the device's original screen they are meant to protect.Įven more, screen protectors vary in hardness. It is the first line of defense for a device screen. A screen protector, as the name implies, is an additional sheet of material that is fitted to the display of an electronic device, like an iPad, to protect it from physical damage. Screen protectors aren't entirely new to anybody today. Screen protectors were initially used in the late 1960s for television screens and only entered the mobile phone market after the rise of Personal Digital Assistants. Many people today think screen protectors were invented when smartphones entered the market. How much do you know about your screen protector?
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