Tempered glass
Toughened or tempered glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength. Our high end CNC cutting machines coupled with auto loading facility and other advanced technologies provides our customers the most sophisticated tempered glass in short time with great quality. At S-Toughen we ensure quality checking in each stage of production to make sure the product which comes out is of superior quality.
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Strong
Toughened glass is 4-5 times stronger than normal annealed glass.
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High thermal shock strength
Ability to withstand high temperature variations upto 250°c.
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Wind loads
Used in building facades as it have the ability to withstand heavy wind loads.
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Safe
Breaks into small, relatively harmless fragments.
Applications of Tempered Glass
Fully tempered glass is used in many applications because of its safety characteristics. Safety comes from strength and from a unique fracture pattern.
Toughened glass is used in a variety of demanding applications
- External Glazing
- Glass wall partition and Doors
- Shower and Tub Partition
- Solar Panels
- Skylight and Pergola
- Stairway Balustrades
Why S-Toughen ?
We incorporates a team of professionals in the glass industry coupled with great industrialists who has decades of experience in the sector. Our great team backed by state of the art and the most sophisticated machines is determined to change the future of glass industry.
- Over 20 years of experience in glass industry
- Best modern imported machineries
- Fully automated factory to ensure quality
- Highly qualified and experienced professional team
- Largest tempering facility
- Best quality glass supply
- High End CNC Cutting machines
Features
| Properties | Tempered Glass | Heat strengthened glass | Annealed Glass |
|---|---|---|---|
| Thermal stress | Upto 250°C | Upto 130°C | Upto 50°C |
| Strength | 4 times of annealed | 2 times of annealed | Not strong |
| Bending strength | 120 – 200 N/mm² | 60 – 100 N/mm² | 40 N/mm² |
| Design stress | 50 Mpa | 27 Mpa | 17 Mpa |
| Surface compression | >10000 psi (69 Mpa) | 3500-7500psi (24-52 Mpa) | Upto 2800 psi (19 MPa) |
| Safety | Approved as safety glazing for most applications |
Not approved as safety glazing |
Not approved as safety glazing |
| Flatness | Slight bow and corrugation |
Bow and corrugation lower than tempered glass |
Very flat |
| Optics | Reasonably good | Good. Comparatively better than tempered glass |
Very good |
| Lamination | Min 1.52 PVB | Min 1.52 PVB | Min 0.38mm PVB |
| NiS breakage | Prone | Extremely rare possibility | Non existent |
Applications
- Glass for Shower Cubicals
- Glass Doors
- Glass for Stairs
- Glass for Windows
- Glass for Facades
- Glass Partitions
- Glass for Railings
- Glass Walkways
- Glass for Squash Courts
- Glass for Automobiles
- Glass for Furnitures
- Glass for Kitchen Appliances
- Glass for Lighting Fixtures
FAQ
Toughened or tempered glass is a type of safety glass which has been thermally heat treated to induce compressive stresses of 11000 to 20000 psi on the surfaces and edge compression of not less than 9700 psi. Tempering puts the outer surfaces into compression and the inner surfaces into tension. Such stresses cause the glass, when broken, to crumble into small granular chunks instead of splintering into jagged shards as plate glass (aka: annealed glass) creates. The granular chunks are less likely to cause injury.
As a result of its safety and strength, toughened glass is used in a variety of demanding applications, including passenger vehicle windows, shower doors, architectural glass doors and tables, refrigerator trays, mobile screen protectors, as a component of bulletproof glass, for diving masks, and various types of plates and cookware.
Tempered glass can be made from annealed glass via a thermal tempering process. The glass is placed onto a roller table, taking it through a furnace that heats it well above its transition temperature of 564 °C (1,047 °F) to around 620 °C (1,148 °F). The glass is then rapidly cooled with forced air drafts while the inner portion remains free to flow for a short time.
Tempered glass heat resistant is four to five times stronger than annealed glass of the same size and thickness against impact.
Tempered glass is much stronger than normal glass and can with stand wind pressure, thermal stress or both. Safety glass, when broken, fractures into relatively small pieces, thereby greatly reducing the likelihood of serious cutting or piercing injuries in comparison to ordinary annealed glass.
Tempering increases thermal strength of glass. Tempered glass has higher thermal strength, and it can withstand high temperature changes up to 250°C.
Tempered Glass provides greater thermal strength. It offers increased resistance to both sudden temperature changes and temperature differentials up to 240°C compared to normal annealed glass which can withstand temperature differentials up to 40°C only.