Quartz glass and high borosilicate glass each have their own advantages and disadvantages. Choosing which one is better depends on specific needs. 1
Comparison of performance characteristics
Hardness: Quartz glass has a higher hardness, with a Mohs hardness of up to 7, while high borosilicate glass has a hardness of about 6.5.
Heat resistance: Quartz glass can be used for a long time at a high temperature of 1100°C and can withstand higher short-term temperatures, while high borosilicate glass can also withstand a temperature difference of about 300°C, but not as good as quartz glass.
• Corrosion resistance: Quartz glass has strong corrosion resistance to both acids and alkalis, and it hardly reacts with other acids except hydrofluoric acid and hot phosphoric acid. High borosilicate glass also has a certain tolerance to chemicals such as acids and alkalis, but not as good as quartz glass.
• Transparency: Quartz glass has extremely high transparency and has high transmittance to ultraviolet rays, visible light and infrared rays. The transparency of high borosilicate glass is slightly inferior to that of quartz glass, but it still maintains good transparency.

• Application scenario comparison
• Quartz glass: Due to its high hardness, high heat resistance and strong corrosion resistance, quartz glass is often used in laboratory utensils, high-end crystal glasses and other occasions that require high transparency and high-end feeling.
• High borosilicate glass: Due to its low expansion rate, high temperature resistance and high chemical stability, it is widely used in industries such as solar energy, chemicals, pharmaceutical packaging, electric light sources and craft accessories, and its price is relatively low.
• Price comparison
• Quartz glass is usually more expensive than ordinary glass due to its high-end properties and complex manufacturing process. High borosilicate glass is more economical and affordable due to its relatively simple manufacturing process.