Chinese domestic Borosilicate 3.3 float glass (BG33) is a special kind of borosilicate glass with excellent physical and chemical properties. Its main components include silicon oxide (SiO2), boron oxide (B2O3) and sodium oxide (Na2O), of which the content of silicon and boron is higher, respectively 78%-80% and 12.5%-13.5%1. BG33 is widely used in laboratory utensils, optical equipment, electronic components and other fields, and is valued for its excellent heat resistance, chemical resistance and mechanical strength.
Low Thermal Expansion: Minimizes deformation with temperature changes, suitable for high temperatures.
Excellent Thermal Stability: Usable up to 450°C long-term, withstands short bursts up to 500°C.
Outstanding Chemical Resistance: Resists water, acids, alkalis, and organic substances.
Strong Mechanical Properties: High bending strength (160 N/mm²) and good abrasion resistance.
High Electrical Insulation: Excellent resistivity (≈ 8.6×1013 Ω⋅cm8.6×1013Ω⋅cm), ideal for electrical applications.