What are the common properties of sapphire?

The advantages of sapphire include:

• Excellent optical characteristics, UV to IR.
• High wear and scratch resistance.
• High operating temperature (1800°C)
• Chemically inert.
• High strength.
• High electrical resistance.
• High thermal conductivity.

What is sapphire material?

Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al2O3) with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium.

What is the hardness of sapphire?

9Sapphire / Hardness (Mohs hardness scale)

Out of a necessity to determine types of minerals out in the field, the Mohs hardness scale was developed by Friedrich Mohs in 1812, and has been a valuable aid in identifying minerals ever since. Ranked 1-10, with diamonds being the hardest mineral at a 10, sapphires are ranked just below at a 9 on the scale.

What is sapphire melting point?

2000°C
One of the hardest materials in existence, sapphire is virtually scratch-proof which helps it maintain its integrity in demanding physical environments. It has a melting point of over 2000°C, making it ideal for high-temperature applications.

Is sapphire glass conductive?

Synthetically produced Sapphire crystals also have high thermal conductivity, up to 40 times more than glass. With a melting point of over 2000°C, its strength is five times that of glass and due to its purity and transparency it can be used as viewing window in high pressure and vacuum applications.

What is a sapphire glass?

Sapphire glass is a synthetic material Sapphires are most well known as rare blue gemstones that form naturally. But just like diamonds, sapphires can be made synthetically — in fact, the first synthetic sapphires were made back in 1902. Plenty of high-end watches also use sapphire-glass faces for the same reason.

How strong is sapphire glass?

nine
The reason why you might want a watch with a sapphire-glass display is pretty straightforward: it’s extremely difficult to damage. As materials scientist Neil Alford told Forbes, sapphire is a nine on the Mohs hardness scale. The hardest material on it — diamond — is a 10.

How is sapphire glass made?

Sapphire glass is made synthetically and isn’t actually considered a glass, but a crystal. Sapphire crystal is made in very high temperatures, and it is constructed of crystalline aluminium oxide. It is then cut with a diamond saw, grinded and polished to the finished “glass” product.

Is sapphire an insulator?

Sapphire, a remarkably stable crystal of an oxide of aluminum, is both lucid and a very good insulator. Because of its features, it has been used in industry in many fields, even under unforgiving environments.

Is sapphire glass durable?

The reason why you might want a watch with a sapphire-glass display is pretty straightforward: it’s extremely difficult to damage. As materials scientist Neil Alford told Forbes, sapphire is a nine on the Mohs hardness scale. The hardest material on it — diamond — is a 10.

How important is sapphire glass?

Watch sapphire is the most expensive type of watch glass as it is incredibly hard and therefore durable. This means sapphire is the best material to protect the watch dial against shock. To make sapphire crystal, pure aluminium oxide is heated and then crystallised.