Heat-strengthened glass is a type of thermally treated glass that undergoes a controlled heating and cooling process to enhance its strength and resistance to wind load and thermal stress. It is approximately twice as strong as annealed glass of the same thickness in resisting wind load .
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Available Sizes
Heat-strengthened glass is available in various thicknesses, typically ranging from 3 mm to 12 mm. The maximum size can vary depending on the manufacturer, but it can be produced in sizes up to approximately 2,800 x 6,000 mm .​
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Key Properties
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Strength: Approximately twice as strong as annealed glass of the same thickness.
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Thermal Shock Resistance: Can withstand temperature differences up to 100°C.
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Breakage Pattern: Fractures into larger pieces compared to fully tempered glass, which shatters into small fragments.
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Surface Compression: Residual surface compression between 3,500 and 7,500 psi for 6 mm glass, according to ASTM C1048 .
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Flatness: Offers a flatter surface with less optical distortion compared to fully tempered glass .​
Applications
Heat-strengthened glass is commonly used in:​Shahe Huide Glass Products Co., Ltd.
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Building Facades: Provides strength and durability for exterior applications.
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Windows and Curtain Walls: Offers resistance to wind load and thermal stress.
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Spandrel Panels: Used in areas requiring additional strength and thermal resistance.
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Laminated Glass: Serves as a component in laminated glass for overhead and sloped glazing .​
Benefits
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Enhanced Durability: Provides increased strength and resistance to wind load and thermal stress.
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Improved Aesthetics: Flatter surface with reduced optical distortion enhances visual clarity.
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Safety: While not classified as safety glass, its breakage pattern reduces the risk of injury compared to fully tempered glass.
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Compatibility: Can be used with various coatings and tints, including reflective and Low-E coatings .​