💎 boro3.3 belongs to a kind of fireproof glass. High borosilicate glass is a kind of glass melting by heating in the glass, which is made by advanced production technology, taking advantage of the conductivity of glass at high temperature. High borosilicate glass has very low coefficient of thermal expansion, high temperature resistance, temperature difference of 200 ℃.
💎 boro3.3 has excellent physical and chemical properties. Its silicon content is over 80%. The internal structure of glass is very stable, so it has good mechanical and chemical properties.
💎 boro3.3 high-temperature glass fully conforms to ISO3583 international standard. Because of its low thermal expansion coefficient, it can better withstand higher temperature difference and has good flame processing performance. It is an excellent material for manufacturing heating utensils and various complicated glassware.
💎 This product is a customized product. After the order is confirmed, it takes about 3-5 days to complete the production. It takes a long time to form by high temperature condensation.
💎 We has more than 200 workers, providing customized glass products. Can meet all customer customization needs. If you need custom glass products, you can contact us.

Specific physical and chemical properties are as follows:

Silicon content: more than 80%

Strain temperature: 520 ℃

Annealing temperature: 560 ℃

Softening temperature: 820 ℃

Refractive index: 1.47

Transparency (2mm): 92%

Elastic modulus: 67KNmm-2

Tensile strength: 40-120 Nmm-2

Stress optical constants of glass: 3.8xl0-6mm2/N

Processing temperature (104dpas): 1220 ℃

Linear Expansion Coefficient: (20-300 ℃) 3.3 x 10-6K-1

Density: 2.23 GCM-1 (20 ℃)

Specific heat: 0.9Jg-1K-1

Thermal conductivity: 1.2Wm-1K-1

Water Resistance: (ISO 719) Level 1

Acidic resistance: (ISO 195) Level 1

Alkali Resistance: (ISO 695) Level 2

Usually the product will be sent in 2-5 working days and takes about 3--9 business days to reach you

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