What Does 9H on Glass Screen Protectors Mean?

Glass Screen Protectors Have Become Main Stream

Installing glass screen protectors has become a solid choice, and if you are considering traditional plastic ones, you must be outdated.

Glass protectors were invented long ago, but their 0.7mm thickness and weight are what keep them from customers. There were glass protectors for iPhone 4, but they made iPhone 4 much thicker. With the development of technology, protectors now are of the same harness but are much thinner and lighter than before. What’s more, they enable sensitive touch and smooth finger moves, thus becoming the solid choice.

Meanings of 9H on Glass Screen Protectors

If you may have noticed that on each package of glass protectors has the mark of 9H. Some people would think according to Mohs Hardness Table and say that these protectors are only a slightly weaker than diamond! Of course, it is not!

According to Friedrich Mohs, hardness of minerals is classified into 10 levels, and there’s a representative mineral for each level. Actually, Mohs Hardness is represented by numbers with no “H” suffix.

Smartphone screens are usually at a Mohs Hardness of 5-6, so that knifes and keys can’t scratch. Coins, knifes and keys are usually made of copper, iron and steel which can’t scratch Mohs 6.5 glass screen protectors, then why Corning Gorilla screens above Mohs 6 are usually scratched?

The main reason of screen scratches is SiO2 (sand). Sand is of a Mohs Hardness of 6-7, and it exists everywhere, so that there are scratches on screens.

After knowing the idea of Mohs Hardness, what on earth does 9H marks on glass protectors mean? The so called H means the hardness of pencil, and when a protector claims that it is 9H, it could resist scratches from the hardest pencil.

From soft to hard, pencil hardness are from 9B to 9H, and comparing glass material with pencil is meaningless.

If you are interested in wholesaling screen protectors, feel free to contact us, we will get back to you within 24 hours.