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Guangzhou tempered glass factory, the difference between K9 crystal glass and ordinary glass

Release time:

Oct 22,2024

There are significant differences between K9 crystal glass and ordinary glass, mainly in the following aspects:

1. material and composition

K9 crystal glass: K9 crystal glass, also known as K9 glass, is an optical borosilicate glass. Among them, the "K" is derived from the German "Krone", which means "crown", and the number 9 represents its lead oxide content (although in fact K9 glass does not contain lead, this name is more based on industry custom or marketing). K9 crystal glass is known for its excellent optical properties, thermal properties and mechanical strength.

Ordinary glass: ordinary glass is made of high quality quartz sand as the main raw material, adding the right amount of soda ash, limestone and other auxiliary raw materials, after high temperature melting. Its main component is silicate double salt, which is an amorphous solid with irregular structure.

2. optical performance

K9 crystal glass: K9 crystal glass in the visible range shows excellent transparency, with low dispersion properties, light will not be dispersed into a variety of colors due to different wavelengths. This makes K9 crystal glass an ideal material for optical components such as lenses and windows.

Ordinary glass: ordinary glass also has excellent transparency and can transmit most of the visible light. But in terms of optical performance, it may not be comparable to K9 crystal glass, especially in terms of dispersion and light transmission.

3. physical properties

Hardness and wear resistance: K9 crystal glass has high hardness and is not easy to wear, while ordinary glass has relatively low hardness and is easy to rub.

Thermal stability: K9 crystal glass can maintain stable performance in a wide temperature range, while ordinary glass may change in high temperature or large temperature changes.

Thermal conductivity: K9 crystal glass has good thermal conductivity, and it may feel cold when licked with the tip of the tongue; while ordinary glass is relatively warm.

4. processing and use

Processing technology: K9 crystal glass is crystalline and cannot be reversed after heating and melting. Therefore, hot casting method cannot be used, and cold working method such as cutting and grinding can only be used. This makes the processing cost of K9 crystal glass relatively high. And ordinary glass can be hot cast into shape, save material and labor, low cost.

Purpose: K9 crystal glass is widely used in optical systems, instruments and equipment, such as camera lenses, microscopes, telescopes, etc. due to its excellent optical performance. Ordinary glass is widely used in construction, furniture, automobiles and other fields because of its wide availability and low cost.

5. Price and Market Positioning

Price: The price of K9 crystal glass is usually much higher than that of ordinary glass, which is mainly determined by its excellent optical properties, physical properties and processing costs.

Market positioning: K9 crystal glass is mainly positioned in the high-end market to meet the application scenarios with strict requirements on optical performance, while ordinary glass is more focused on meeting the daily needs of the mass market.

In summary, there are significant differences between K9 crystal glass and ordinary glass in terms of material, optical properties, physical properties, processing and use, price and market positioning. Which glass to choose depends on the specific application and needs.

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