What is the material of sapphire mirror? Is it better to have a glass glass or a sapphire mirror

Different uses.

The scratch (scraping) resistance of the surface of the ore tempered glass is slightly worse, because the hardness of the ore tempered glass is about 7, while the hardness of the sapphire surface is 9, but the overall compressive strength of the ore tempered glass is higher than that of the sapphire glass surface, so all deep-water diving watches (deeper than 200 meters) use mineral tempered glass on the watch surface.

Although the surface of the sapphire has excellent scratch (scratch) resistance, the thickness of this layer of sapphire is only 5 microns, and the overall compressive strength is worse than that of mineral tempered glass, so it cannot be used in deep-water diving watches.

This is from the structural strength, but also for the actual use, if from the general use of the case, the daily or scratch resistance as the main consideration, because the average person is unlikely to have the opportunity to do deep diving, and the surface of the sapphire gloss is high and with a faint dark blue, dirt and water droplets are difficult to attach, the appearance is more noble and lovely.

Cousin trivia A trick to teach you how to distinguish a sapphire crystal mirror from a mineral glass mirror.

At present, there are three main identification methods that are widely used: ZHI laboratory identification and drip method

Dear, hello, it is a pleasure to serve you, about high hardness coated mirror and sapphire which is good, for your reply for sapphire good sapphire is very hard, is the inevitable choice of top watches. However, like glass, it is brittle and easily broken. Therefore, if the sapphire crystal is broken, the cost of repairing the roller will be very expensive, as the watchmaker must carefully inspect the movement to ensure that there are no sapphire fragments left in the movement before replacing the lenses.

In addition to that, it is a powerful fingerprint collector, so it needs to be wiped frequently to be shiny and traceless. Whether it is natural sapphire or synthetic sapphire, it is one of the hardest substances on earth, with a hardness of 9 on the Mohs scale. Sapphires are good, they don't wear easily, and they also have color when viewed from the side.

Sapphire, commonly known as blue corundum, is an important variety of synthetic single crystals, which is called sapphire because it contains titanium and is blue. Artificial sapphire is used by the watch industry to make high-end watch glass because of its beautiful color and good light transmittance, called sapphire watch glass. Because of its high hardness and excellent wear resistance, sapphire watch glass is known as "never wear out watch glass".

Sapphire crystal, also known as sapphire crystal, generally refers to synthetic sapphires, which are very different from the natural sapphires that people usually understand as jewelry, and are generally used in the manufacture of watch crystals. It is a wear-resistant material along with tungsten titanium alloy and high-tech ceramics. These materials are resistant to wear but cannot withstand strong impacts, and some substances of the same or greater hardness (e.g

Grinding stones, sandpaper, nail chips, granite surfaces, concrete walls and floors, etc.) may scratch the surface of these materials.