tempered glass tabletop Archives - Bear Glass Blog https://bearglassblog.com/tag/tempered-glass-tabletop/ Wed, 18 Feb 2026 09:40:54 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://bearglassblog.com/wp-content/uploads/2015/08/cropped-Bear_logo1-1-75x75.png tempered glass tabletop Archives - Bear Glass Blog https://bearglassblog.com/tag/tempered-glass-tabletop/ 32 32 Glass Tempering By Bear Glass https://bearglassblog.com/nj-tempering-by-bear-glass/ Thu, 26 Mar 2026 19:49:00 +0000 http://bearglassblog.com/?p=1088 Overview of Tempered Glass: Tempered glass is made using special heated furnaces, which heat the annealed glass to a uniform temperature of approximately 700ºC. When the glass exits the furnace, it is rapidly cooled. This rapid cooling puts the glass surface into a state of compression while the centre core remains in tension. THERMAL TEMPERING Tempering Process:Tempered glass is made by uniformly heating annealed glass to a temperature of up to 700°C and immediately cooling it. The glass first goes through the furnace, carried in by rollers, where it is heated using three modes – conduction, convection and radiation. The rollers conduct the heat, while the coils help in the radiation of heat. The convection effect is brought about by hot air blowing through the nozzles, thus circulating the heat inside the furnace and making sure that the glass is heated evenly on all sides. This super heated glass then undergoes a rapid cooling process by a uniform and simultaneous blast of air on both surfaces. After tempering, the stress pattern developed by the glass is high, and the mechanical strength of tempered glass is four to five times higher than that of annealed glass. Mechanical Strength of Tempered Glass = 4 x Mechanical strength of Annealed Glass When tempered glass is broken, all the stored energy is released at once and the glass breaks into small pieces. Characteristics of Tempered glass: Tempered glass is four to five times stronger than annealed glass of the same size and thickness against impact. Tempered glass has higher thermal strength, and it can withstand high temperature changes up to 250°C. Tempered glass is considered as safety glass. It is difficult to break and even in the event of a breakage, disintegrates into small relatively harmless globules. Tempering does not alter the basic characteristics of glass such as light transmission and solar radiant heat properties of normal glass. The glass surface after heat treatment has the same resistance to surface damage as annealed glass. Tempered glass cannot be cut or altered. One problem that can also exist with tempered glass is spontaneous breakage, where the glass can break for no apparent reason. Spontaneous breakage occurs when nickel sulphide stones increase in size due to repeated heating and cooling. Properties of Tempered Glass: Properties Tempered Glass Thermal Shock Resistance Up to 250°C Mechanical Strength Four to five times stronger thanannealed glass Tensile Strength 65 MPa Bending Strength 120-200 N/mm2 Surface Compression > 95 MPa Design Stress for Architectural Purposes 50 MPa Fragmentation Small round crystals Conducive for Processing Cannot be cut after Tempering Need for Tempered Glass:Tempering increases tensile strength, thermal shock resistance, and safety of normal glass. It also increases its heat withstanding capacity. Because of these properties, tempered glass is preferred in applications where strength, safety and thermal resistance are important considerations. Strength & Safety Considerations Four to five times stronger than annealed glass Two to three times stronger than heat strengthened glass Fragments into small, relatively harmless pieces, reducing the likelihood of injury. Heat resistance Withstands both uneven heating and high temperatures due to its superior edge strength compared to normal annealed glass. Because of its high edge strength tempered glass is used in spider and point fixed glazing. Thermal Breakage:Uneven heating due to direct sunlight makes glass expand and contract at different rates. This difference in the rates of expansion (central part of glass) and contraction (edges of glass) create stresses in glass which may lead to breakage. When temperature difference is below 32°C, the risk of thermal breakage is low, but when the difference becomes more than this, the risk increases significantly. Thermal breakage starts at the edge and is perpendicular to the glass edge. Breakage may be single or multiple depending on the built up stress. Several cracks indicate high thermal stresses across the glass pane. A fully tempered glass has significantly higher edge strength to withstand chances of thermal breakage. Application of Tempered Glass: Tempered glass is specifically designed for use in areas where there is a high risk of contact and breakage. It is not harder or softer than annealed glass but is tougher. Tempering does not make glass more porous nor is tempered glass more prone to scratches than normal glass. Tempered glass offers a wide variety of uses in industries including building, manufacturing, automotive, to name a few. There is a wide scope for the use of tempered glass in the building industry. It can be used to raise the elemental beauty of exteriors and interiors by using it on facades, showroom shelves, dividers, shower cabins, doors and the like. High resistance to thermal stress and small missile impact makes tempered glass an ideal choice for sloped glazing. The manufacturing industry uses tempered glass in ovens, refrigerators, fireplace screens, and shelves. In the motor vehicle industry, tempered glass is commonly used inside and rear windows. To know more about this glass product, contact Bear Glass now!

The post Glass Tempering By Bear Glass appeared first on Bear Glass Blog.

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Overview of Tempered Glass:

Tempered glass is made using special heated furnaces, which heat the annealed glass to a uniform temperature of approximately 700ºC. When the glass exits the furnace, it is rapidly cooled. This rapid cooling puts the glass surface into a state of compression while the centre core remains in tension.

THERMAL TEMPERING

Tempering Process:
Tempered glass is made by uniformly heating annealed glass to a temperature of up to 700°C and immediately cooling it. The glass first goes through the furnace, carried in by rollers, where it is heated using three modes – conduction, convection and radiation. The rollers conduct the heat, while the coils help in the radiation of heat. The convection effect is brought about by hot air blowing through the nozzles, thus circulating the heat inside the furnace and making sure that the glass is heated evenly on all sides. This super heated glass then undergoes a rapid cooling process by a uniform and simultaneous blast of air on both surfaces.


After tempering, the stress pattern developed by the glass is high, and the mechanical strength of tempered glass is four to five times higher than that of annealed glass.

Mechanical Strength of Tempered Glass = 4 x Mechanical strength of Annealed Glass

When tempered glass is broken, all the stored energy is released at once and the glass breaks into small pieces.

Characteristics of Tempered glass:

Tempered glass is four to five times stronger than annealed glass of the same size and thickness against impact.

Tempered glass has higher thermal strength, and it can withstand high temperature changes up to 250°C.

Tempered glass is considered as safety glass. It is difficult to break and even in the event of a breakage, disintegrates into small relatively harmless globules.

Tempering does not alter the basic characteristics of glass such as light transmission and solar radiant heat properties of normal glass.

The glass surface after heat treatment has the same resistance to surface damage as annealed glass.

Tempered glass cannot be cut or altered.

One problem that can also exist with tempered glass is spontaneous breakage, where the glass can break for no apparent reason. Spontaneous breakage occurs when nickel sulphide stones increase in size due to repeated heating and cooling.

Properties of Tempered Glass:








































PropertiesTempered Glass
Thermal Shock ResistanceUp to 250°C
Mechanical StrengthFour to five times stronger than
annealed glass
Tensile Strength65 MPa
Bending Strength120-200 N/mm2
Surface Compression> 95 MPa
Design Stress for Architectural Purposes50 MPa
FragmentationSmall round crystals
Conducive for ProcessingCannot be cut after Tempering

Need for Tempered Glass:
Tempering increases tensile strength, thermal shock resistance, and safety of normal glass. It also increases its heat withstanding capacity. Because of these properties, tempered glass is preferred in applications where strength, safety and thermal resistance are important considerations.


  • Strength & Safety Considerations

    • Four to five times stronger than annealed glass

    • Two to three times stronger than heat strengthened glass

    • Fragments into small, relatively harmless pieces, reducing the likelihood of injury.



  • Heat resistance

    • Withstands both uneven heating and high temperatures due to its superior edge strength compared to normal annealed glass. Because of its high edge strength tempered glass is used in spider and point fixed glazing.

Thermal Breakage:
Uneven heating due to direct sunlight makes glass expand and contract at different rates. This difference in the rates of expansion (central part of glass) and contraction (edges of glass) create stresses in glass which may lead to breakage. When temperature difference is below 32°C, the risk of thermal breakage is low, but when the difference becomes more than this, the risk increases significantly.

Thermal breakage starts at the edge and is perpendicular to the glass edge. Breakage may be single or multiple depending on the built up stress. Several cracks indicate high thermal stresses across the glass pane. A fully tempered glass has significantly higher edge strength to withstand chances of thermal breakage.

Application of Tempered Glass:

Tempered glass is specifically designed for use in areas where there is a high risk of contact and breakage. It is not harder or softer than annealed glass but is tougher. Tempering does not make glass more porous nor is tempered glass more prone to scratches than normal glass. Tempered glass offers a wide variety of uses in industries including building, manufacturing, automotive, to name a few.

There is a wide scope for the use of tempered glass in the building industry. It can be used to raise the elemental beauty of exteriors and interiors by using it on facades, showroom shelves, dividers, shower cabins, doors and the like.

High resistance to thermal stress and small missile impact makes tempered glass an ideal choice for sloped glazing.

The manufacturing industry uses tempered glass in ovens, refrigerators, fireplace screens, and shelves.

In the motor vehicle industry, tempered glass is commonly used inside and rear windows.

To know more about this glass product, contact Bear Glass now!

The post Glass Tempering By Bear Glass appeared first on Bear Glass Blog.

]]> Glass Tabletops by Bear Glass https://bearglassblog.com/glass-tabletops-by-bear-glass/ Thu, 19 Feb 2026 18:34:00 +0000 http://bearglassblog.com/?p=1504 Glass Tabletops Bear Glass is the 4th generation family business specializing in Custom Glass Tables.  Bear Glass has always led the way in design ideas and styles.  Our custom glass tables are matching materials.  Bear Glass imports large quantities of glass table tops in many sizes, shapes, and thicknesses from all over. We carry an extensive line of glass tops including Round glass top tables, Square glass table tops, Octagon, Rectangular glass tops, Boat shaped, Oval, and Race track glass table tops. Our glass tops are available in a variety of glass edges as well.  Bear Glass has the finest furniture quality glass with our glass edges and corners expertly polished.  Bear Glass is a leading supplier to hotels, restaurants, and designer showrooms.  Bear Glass expertly packs your glass tabletops to ensure safe arrival.  Satisfaction is more than guaranteed with our beautiful glass tabletops that will make your home, office, or any space elegant and timeless.  If you’re in need or want of a glass tabletop look no further, you’ve come to the right place. Here at Bear Glass, we have the capability to custom cut, bevel, polish and temper your glass at our manufacturing plant in New Jersey.  This ensures a perfectly customized fit, gives you the opportunity to choose the glass type you want, and gets it delivered to you in record time for home and office needs.  Whether it’s for a glass table top replacement, glass table top cover or a table design of your own, the steps for customizing your glass table top are the same.  Our glass table tops are custom manufactured, which means that all pieces can be to your specification. There are plenty of reasons why you should choose our glass tabletops.  Glass tabletops protect your furniture from nicks, scratches, and other possible damage.  It refreshes older pieces with a less permanent option, as compared to stains or paint.  Our glass is simply beautiful; glass tabletops are an excellent way to add shine to an otherwise dull item.  Elevate the impact of wood tables or dressers while protecting these investments from scratches, glass rings, sun damage, and even scuffs.  Renew old glass table inserts with a glass table replacement; outdoor tables are especially vulnerable to damage and weathering.  Glass tabletops are used in a number of different ways, but the most popular is to use the glass to protect the surface of a table, desk, or a coffee table. When used as a cover on a wood surface, normally a thinner glass is used.  The edges of the glass would normally be polished to smooth them out and avoid the possibility of injury from the sharp edges.  When glass is used as a wood surface cover there is no need for tempering the glass.  Each of our thick glass table tops features an edge of your liking- a brilliantly polished edge with a small decorative ledge- especially well-suited for formal dining or fine accent tables. For more information on our Glass Tabletops please contact Bear Glass at: FACTORY/ OFFICE Address: Bear Glass Inc. 217-44 98th Ave., Queens Village, NY – 11429United States +1 (718) 832-3604 sales@bearglass.com

The post Glass Tabletops by Bear Glass appeared first on Bear Glass Blog.

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Glass Tabletops

Bear Glass is the 4th generation family business specializing in Custom Glass Tables.  Bear Glass has always led the way in design ideas and styles.  Our custom glass tables are matching materials.  Bear Glass imports large quantities of glass table tops in many sizes, shapes, and thicknesses from all over. We carry an extensive line of glass tops including Round glass top tables, Square glass table tops, Octagon, Rectangular glass tops, Boat shaped, Oval, and Race track glass table tops.

Our glass tops are available in a variety of glass edges as well.  Bear Glass has the finest furniture quality glass with our glass edges and corners expertly polished.  Bear Glass is a leading supplier to hotels, restaurants, and designer showrooms.  Bear Glass expertly packs your glass tabletops to ensure safe arrival.  Satisfaction is more than guaranteed with our beautiful glass tabletops that will make your home, office, or any space elegant and timeless.  If you’re in need or want of a glass tabletop look no further, you’ve come to the right place. Here at Bear Glass, we have the capability to custom cut, bevel, polish and temper your glass at our manufacturing plant in New Jersey.  This ensures a perfectly customized fit, gives you the opportunity to choose the glass type you want, and gets it delivered to you in record time for home and office needs.  Whether it’s for a glass table top replacement, glass table top cover or a table design of your own, the steps for customizing your glass table top are the same.  Our glass table tops are custom manufactured, which means that all pieces can be to your specification.

There are plenty of reasons why you should choose our glass tabletops.  Glass tabletops protect your furniture from nicks, scratches, and other possible damage.  It refreshes older pieces with a less permanent option, as compared to stains or paint.  Our glass is simply beautiful; glass tabletops are an excellent way to add shine to an otherwise dull item.  Elevate the impact of wood tables or dressers while protecting these investments from scratches, glass rings, sun damage, and even scuffs.  Renew old glass table inserts with a glass table replacement; outdoor tables are especially vulnerable to damage and weathering.  Glass tabletops are used in a number of different ways, but the most popular is to use the glass to protect the surface of a table, desk, or a coffee table.

When used as a cover on a wood surface, normally a thinner glass is used.  The edges of the glass would normally be polished to smooth them out and avoid the possibility of injury from the sharp edges.  When glass is used as a wood surface cover there is no need for tempering the glass.  Each of our thick glass table tops features an edge of your liking- a brilliantly polished edge with a small decorative ledge- especially well-suited for formal dining or fine accent tables.

For more information on our Glass Tabletops please contact Bear Glass at:

FACTORY/ OFFICE

Address:

Bear Glass Inc.

217-44 98th Ave., Queens Village, NY – 11429
United States
 +1 (718) 832-3604
 sales@bearglass.com

The post Glass Tabletops by Bear Glass appeared first on Bear Glass Blog.

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