Why is it that high borosilicate glass cups and pots are not prone to cracking?

In daily life, according to statistics, over 80% of people have encountered the situation where a glass cup or kettle explodes when filled with freshly boiled water. This not only gives a fright, but some people have even been scalded and scratched! It's extremely unsafe!

The glass cup shattered

According to surveys, over 90% of people would not choose ordinary glass cups and pots. However, with technological advancements, high borosilicate glass cups and pots have now been widely used! They can withstand both rapid cooling and heating without cracking! Through the Kaswo cup and pot test, good high borosilicate glass cups and pots can withstand rapid cooling and heating from -20 degrees to +120 degrees without cracking;

So, why is it that high borosilicate glass cups and pots are not prone to cracking?

The most important point is that high borosilicate glass has the special advantage of uniform heating; many introductions to high borosilicate glass mention high strength, high hardness, low expansion rate, etc., but they never mention the advantage of uniform heating;

In fact, the main reason why ordinary glass will crack when exposed to 100-degree hot water at room temperature is due to uneven heating of the glass container. When water is poured into the container, it concentrates at one point, causing the temperature to rise instantly, which leads to uneven heating and instant cracking of the glass container. However, high borosilicate glass is made by adding borax, a traditional glass-making glaze, to water glass sand, soda water, and ground lime, which are then fired at over 1000 degrees Celsius. This characteristic solves the problem of ordinary glass cracking when exposed to water!

That's why the high borosilicate glass cups and pots introduced online possess excellent properties such as low expansion rate, high strength, high hardness, and high light transmittance. Additionally, the high borosilicate glass material is dense and not prone to absorbing water, making it particularly easy to clean. Due to the special properties of high borosilicate glass, it is widely used in the tea set and pharmaceutical industries.