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China Suppliers Factory Ultra-Clear Tempered Glass - Low Iron, Custom Sizes, High Light Transmittance
Glass Specifications
Introduction
👁️ Optical Performance
Visible Light Transmittance (VLT)
91.5%–92.5% (6mm thickness)
Solar Heat Gain Coefficient (SHGC)
0.87–0.90 (6mm clear glass)
UV Transmittance
≈75% (without coating)
Reflectance
≈8% (surface reflection)
🔬 Physical & Chemical Properties
Density
2.5 g/cm³
Thermal Expansion Coefficient
9.0×10⁻⁶/K (20–300°C)
Softening Point
720°C
Annealing Point
550°C
Acid Resistance (ISO 695)
Class A
Alkali Resistance (ISO 695)
Class A
Frequently Asked Questions
What is the light transmission rate of this ultra-white glass?
The Visible Light Transmittance (VLT) for a 6mm thickness ranges between 91.5% and 92.5%, providing exceptional clarity.
How does the glass react to high temperatures?
The glass has a softening point of 720°C and an annealing point of 550°C, with a thermal expansion coefficient of 9.0×10⁻⁶/K.
Is this glass chemically resistant?
Yes, it is highly durable, achieving Class A ratings for both Acid and Alkali resistance according to ISO 695 standards.
What is the UV transmittance of the glass?
Without additional coating, the UV transmittance is approximately 75%.
What is the density and reflectance of the material?
The glass has a density of 2.5 g/cm³ and a surface reflectance of approximately 8%.
What is the Solar Heat Gain Coefficient (SHGC)?
For 6mm clear glass, the SHGC ranges from 0.87 to 0.90, indicating its solar energy performance.