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Square fused silica glass quartz plates for metal handle lamps
It is a special glass that contains silicon dioxide. INPU quartz glass board is made from natural
quartz after the process of melting and fine grinding.
It has high purity, heat resistance and corrosion resistance, also be low coefficient of thermal expansion. It is transparent and colorless, contains no air bubble and no processing trade will be found. It is purity is controlled to the grade of PPM, and also has the great performance such as how heat expansion rate, high temperature proof, chemical stability, perfect insulation, etc.
Physical Properties
Density | 2.2±0.05 (g/cm³) |
1.Thermal stability: cooling from 1100°C to 20°C for three times, No crack.
2.Heating to 1100°C for one hour, No color change. |
Hardness | 5.5-6.5 (Mohs') | |
Design Tensile Strength | 4.8X107(N/m²) | |
Design Compression Strength | >1.1X109 (N/m²) | |
Coefficient of Thermal Expansion(20°C-300°C) | 5.7X10-7 (cm/cm°C) | |
Thermal Conductivity (20°C) | 1.4 (W/M.°C) | |
Specific heat(20°C) | 670 (J/kg.°C) | |
Electrical Resistivity (350°C) | 7x107(Ω.cm) | |
Dielectric Constant | 3.75 | |
Dielectric Strength | 5x107(v/m) | |
Softening Point | 1680 (°C) | |
Annealing Point | 1210 (°C) | |
Strain point | 1120 (°C) | |
Short-period working temperature | 1300 (°C) | |
Long-period working temperature | 1100 (°C) |
Chemical Elements Composition (unit: ppm)
SiO2 | Al | Fe | Ca | Mg | Ti | Mn | B | K | Na | Li |
>99.97% | 18 | 1.0 | 1.92 | 1.85 | 1.2 | 0.05 | 0.2 | 1.5 | 1.5 | 0.5 |
Application
High temperature proof, Scientific research, Medical, Electronic instrument, Optical industry, Vacuum instruments and light source, etc.


Certifications

Lianyungang Inpu Quartz Co.,Ltd

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