What is the difference between chemically tempered glass and physically tempered glass?

2022-06-07 14:56:57

        Nowadays, tempered glass is increasingly used in 3C digital, smart home appliances, smart home, IOT hardware, new energy vehicles, etc. Basically, there is a display touch application scenarios basically have the existence of tempered glass.

In the 3C digital field, the majority of the basic chemical tempered glass, such as smartphone back cover 2.5D glass, 3D glass, camera glass lens, notebook touch screen glass, car touch navigation glass and other scenes have the sound and shadow of chemical tempered glass, chemical tempered glass thickness basically to 0.38, 0.55, 0.65, 0, 0.8, 0.9/0.95, 1.0, 1.2, 1.5 1.8, 1.0, 2.0, 2.5 and other thicknesses, high-end flagship machines are basically based on imported glass, such as Corning Gorilla Glass, Schott, Japan Asahi Glass and other glass-based, low-end machines to domestic Luo Glass, South Glass, Asahi Hong and other glass-based.

Smart home appliances, smart home, smart home furnishings, photovoltaic industry, medical devices, industry applications and other fields are basically dominated by physically toughened thick glass, like we see the refrigerator appliance glass, rice cooker, kitchen appliances, smart door locks, smart home and other glass panels are physically toughened, the thickness is generally above 2.8 thickness.

Chemically tempered glass and physically tempered glass have their own advantages and disadvantages, it mainly depends on the specific use of the scene, how to combine cross-border processes, iterative optimization and upgrading, in order to better meet customer needs.

Tempered glass is one of our more common glass products, and many people do not know that the processing of tempered glass is chemically tempered and physically tempered two kinds of tempering process, both of which have their unique advantages, the following I will make a brief introduction for you.

Physically tempered glass is a more widely used glass, architectural curtain wall glass, furniture glass, etc. is generally made of physically tempered processing. The principle of physical tempering is to heat the glass above the strain temperature, rapid and uniform cooling of the glass surface, the surface state freezing, when the internal cooling of the glass gradually, the first cooled surface will constrain the internal contraction, the result of compressive stress on the glass surface, the formation of tensile stress inside the glass.


Chemical tempering refers to the use of chemical principles to improve the strength of glass, but more often refers specifically to the use of low temperature ion exchange principles to improve the strength of glass, also known as the ion exchange method. The process is below the glass strain point temperature, the glass is immersed in high temperature molten salt, the small volume of alkali metal ions in the glass surface layer and the large volume of alkali metal ions in the molten salt should diffuse and mutual exchange occurs, as the large volume of ions occupy the space of small ions, so that the glass surface compressive stress, thereby improving the strength of the glass.

The current market is generally more physically tempered glass, chemically tempered due to high energy consumption, high cost, broken into tiny pieces unlike physically tempered glass, and therefore does not belong to the safety glass. However, chemically tempered has its own characteristics, chemically tempered glass can be used to temper thin glass, while physically tempered thin glass is easy to deformation. Chemically tempered glass also features high strength, uniform stress, no stress spots, dense surface structure, high chemical stability, good thermal stability, good flatness, no deformation, no self-explosion, and superior performance.

5G a large number of popular commercial, Internet of Everything era, involving more and more terminal manufacturers of IoT hardware, tempered glass with high transparency, cold, high-end special texture, coupled with the traditional manufacturing process and today's modern advanced technology cross-border integration, CMF technology on the glass is increasingly rich, not only the traditional screen printing, color painting, and with the nano-embossed combination of optical texture cross-border integration, so that Glass surface decoration more stunning.

Not only the new and unique trendy products or industry applications, smart home appliances, smart home furnishings, after creative design texture designers, through aesthetic design, optical texture design and customer and user use scenarios combined, to explore the user's pain point needs, to provide a more warm and face value of the whole scene solutions, to create value for customers and users, in order to go further and further on the road of CMF technology exploration.

HHG is a professional glass manufacturer and glass solution provider include range of tempered glasslaminated glasstextured glass and etched glass. With more 20 years development, there are two produce lines of pattern glass ,two lines of float glass and one line of restoration glass. our products 80% ship to overseas, All our glass products are strict quality control and carefully packed in strong wooden case, ensure you receive the finest quality glass safety in time.

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