What does 9H stand for in tempered glass film? What is the hardness of sapphire?

9H represents the scratch resistance of the surface. Tempered glass generally does not reach the hardness of 9H, which is between 7H and 8H.

2, sapphire hardness:

Sapphire can reach the hardness of 9H.

Extended data:

First, Mohs hardness:

The main function of film pasting is to prevent scratches. Anything with a higher Mohs hardness than the screen material will cause scratches on the screen. Among the common things, nail 2.5, aluminum copper 3, ordinary iron 4-5, stainless steel 5.5, ordinary glass 6, corning gorilla glass 6.5, special glass close to 7, timely (the main component of sand) 7, topaz 8, corundum 9 (red and sapphire), diamond 10.

Note: Mohs hardness is not equal to pencil hardness. At present, pencil hardness is often used to identify in the market. If you go to a treasure, the hardness of plastic film is 4H and 6H, and the hardness of glass film is 9H, which is completely different from Mohs hardness. 9H is the highest level of this scalar, but it is not even Morse 4, but this is not false propaganda. I'll explain it in detail later.

Second, about all kinds of plastic film:

Advantages: Cheap, cheap, and cheap, generally less than 2 yuan.

Disadvantages:

1. High-definition film: Also known as high-permeability film, it is the most common film in the street, specialty stores and Taobao, and the only film worth considering among plastic films. Its advantage is that the screen is clear and hardly affects the screen display. Its disadvantage is that it is very easy to become a fingerprint collector, and it will become a map of the world in a few screens.

2. Frosted film: The only advantage is that it feels good, but it is useless. At present, the screen fineness of almost all smart phones has reached or even exceeded the "retina" standard, and the matte film has instantly become a "big fruit", which is definitely an insult to the screen.

3. Mirror mask: The effect is a bit similar to that of an ordinary mirror. Mirror film adds some special materials to the film, which can make the film have high reflective ability, so this film can also be used as a mirror when closing the screen, adding a lot of color to the "off-screen aesthetics".

4. Diamond film: This is the most inexplicable film, which is directly equivalent to scratches and stains on the full screen. You can Baidu the picture. This picture is of the type with more stars and fewer stars, but it is similar.

Dandruff is all over, and some people think it looks good.

5. Anti-voyeurism film: MICROLOUVER optical technology is adopted, and the information displayed on the screen can only be seen by the users in front, and only darkness can be seen on the left and right.

Third, let's talk about window film and scratches:

Tempered film, in fact, is also a glass film, only using special processing technology to make it harder and tougher, but it is still glass after all. It is difficult for ordinary people to see the difference directly in their hands. Only through the actual test, scraping, scraping and smashing, can they see the difference.