What is Borosilciate Glass and its Characteristics

Borosilicate glass has a very low thermal expansion, about one of three of soda lime glass. The main approximate compositions are 59.6% silica sand, 21.5% boric oxide, 14.4% potassium oxide, 2.3% zinc oxide and trace amounts of calcium oxide and aluminum oxide.

Do you know what other characteristics?

Density 2.30g/cm²
Mohs Hardness 6.0Mohs’
Elasticity Modulus 67KNmm – 2
Tensile Strength 40 – 120Nmm – 2
Poisson Ratio 0.18
Coefficient of Thermal Expansion 20-400°C (3.3)*10`-6
Specific Heat Conductivity 90°C 1.2W*(M*K`-1)
Refractive Index 1.6375
Specific Heat 830 J/KG
Melting Point 1320°C
Softening Point 815°C
Thermal Shock ≤350°C
Impact Strength ≥7J
Water Tolerance HGB 1级 (HGB 1)
Acid Resisting HGB 1级 (HGB 1)
Alkali Resistance HGB 2级 (HGB 2)
Pressure-Resistant Properties ≤10Mpa
Volume Resistance 1015Ωcm
Dielectric Constant 4.6
Dielectric Strength 30 kV/mm 

Known for its heat resistance and physical durability, borosilicate glass is used in a wide variety of industries and applications.

– Laboratory Glassware
— Pharmaceutical Glass Tubing
— Cookware & Kitchen Implements
— Optical Equipment
— Lighting Ornament
— Drinking glasses etc. 

borosilicate glass tube

Saida Glass is a professional GLASS PROCESSING factory over 10years, strive to be the top 10 factories with offering different kinds of customized glass, like cover glass from 7’’ to 120’’ for any display, borosilicate 3.3 glass tubes from min. OD dia. 5mm to max. OD dia. 315mm.

Saida Glass consistently strives to be your reliable partner and let you feel the value-added services. 

Post time: Aug-13-2020

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