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TEMPAX

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TEMPAX (borosilicate glass) is a colorless, transparent glass with a heat resistance temperature of 500℃.

Because of its high heat resistance and transparency, it is used for viewing windows, optical components, restaurant bake tops, light shades, and other applications where liquids and pressure are applied. Because it is resistant to rapid temperature changes, it can be safely used in high-temperature environments.

We also offer reinforcing and drilling processes. Please feel free to consult us about even complicated drilling processes, as we will manufacture them based on drawings and in cooperation with the customer's perception.

10 x 10 mm
￥830 (excl. tax)
￥913 (tax included)

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Table of contents

Use Cases
Product Details
About Size
Reasons to Choose Us
FAQ

Use Cases

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Product Details

Heat resistant glass with a heat resistance temperature of 500℃

TEMPAX is a heat-resistant glass (borosilicate glass) manufactured by a German specialty glass manufacturer (Schott).

It contains more boric acid than ordinary glass, resulting in a lower coefficient of thermal expansion, and has excellent heat resistance, chemical resistance, and permeability. This glass is suitable for a maximum operating temperature of 500℃ and a normal operating temperature of 450℃.

Since it does not break even when exposed to high heat, it can be safely used in places where heat and fire are handled, such as viewing windows, optical components, restaurant baking areas, and lighting shades exposed to liquids and pressure.

In addition to its excellent heat resistance, TEMPAX (borosilicate glass) is also characterized by its high transmission.

While float glass has a slight greenish tint, Tempax is nearly colorless and transparent, allowing the color of objects to be clearly seen even through glass.

Mechanical and Thermal Properties of TEMPAX

Features Unit TEMPAX
Glass Types - Borosilicate
Heat Resistance Temperature ℃ 500
Density g/㎤ 2.2
Coefficient of thermal expansion α
(20-300℃)		 x 10-7/℃ 32.5
Softening Point ℃ 820
Slow cooling point ℃ 560
Distortion Point ℃ 518
Young
If you have any problems with thickness, please feel free to contact us.

Tempering process is possible

Tempax can be “tempered”.

Tempax tempered glass is 3.5 to 4 times stronger than regular Tempax, making it more resistant to breakage.

In addition, when regular TEMPAX is broken, the fragments are sharp and dangerous like blades, but with tempered TEMPAX, even if it should break, the fragments will be granular, so there is less risk of injury and it is safer.

Improved thermal shock resistance temperature and pressure resistance strength

Tempering Tempax increases its thermal shock resistance temperature from 175℃ to 250℃ and doubles its pressure resistance strength.

It can be used for machine windows, vacuum chambers, etc. that are subject to heat and pressure.

What is a thermal shock temperature? 

When glass is exposed to heat or water, a sudden change in temperature occurs at the surface of the glass. The temperature difference (temperature change) that can be withstood at this time is called the thermal shock resistance temperature.

Heat Resistant Glass Comparison Chart

Heat resistant glass
Tempered glass
強化ガラス
TEMPAX
テンパックス(ホウケイ酸ガラス)
Tempered TEMPAX
テンパックス強化
Neoceram
ネオセラム
FireLite
ファイアライト(耐熱結晶化ガラス)
Quartz Glass
石英ガラス
Normal Operating Temperature 200℃ 450℃ 260℃ 600℃ 600℃ 900℃
Max. operating temperature 200℃ 500℃ 290℃ 700℃ 700℃ 1000℃
Thermal Shock Temperature 180℃ 175℃ 250℃ 700℃ 800℃ 900℃
Main locations of use
  • Kitchen Oil Splash Guard
  • Grilling area for restaurants
  • Kitchen Car
  • Lighting Shade
  • Wood Stove Window
  • Sight glass for furnace observation
  • Wood Stove Window
  • Sight glass for furnace observation
  • Glass for fire protection
  • Peephole of a kiln　
  • Wood or pellet stove window
  • Semiconductor Manufacturing Components
  • Mechanical Parts

*Normal Operating Temperature：Continuous Operating Temperature
*Max. operating temperature：Temperatures available for short periods of time only

Please contact us if you have any problems with glass types.

Free samples delivered

Free samples of TEMPAX (borosilicate glass) can be provided. You can check the actual reflectance and high transmittance by looking at the actual product. Please contact us for a free glass sample.

Request a free sample >

About Size

26 Standard Sizes / For Research, Physics and Chemistry, and Experiments

We have 26 kinds of standard heat-resistant glass (TEMPAX) available for purchase.

We offer 13 types of square glass plates (rectangular and square) and 13 types of round glass plates (round and circular).

Because of the lower price and faster delivery than custom sizes, we receive many orders for glass sheets for laboratory equipment, research, and physical/chemical use.

In addition to heat resistant glass (TEMPAX), we also sell standard float glass (soda glass) and tempered glass.

View Float Glass >

View Tempered Glass >

List of square standard TEMPAX sizes and thicknesses

  Size (mm) Thickness (mm)
1 10×10 1.1 / 2 / 3.3 / 5
2 20×20 1.1 / 2 / 3.3 / 5
3 30×30 1.1 / 2 / 3.3 / 5
4 40×40 1.1 / 2 / 3.3 / 5
5 50×50 1.1 / 2 / 3.3 / 5
6 60×60 1.1 / 2 / 3.3 / 5
7 70×70 1.1 / 2 / 3.3 / 5
8 80×80 1.1 / 2 / 3.3 / 5
9 90×90 1.1 / 2 / 3.3 / 5
10 100×100 1.1 / 2 / 3.3 / 5
11 150×150 1.1 / 2 / 3.3 / 5
12 200×200 1.1 / 2 / 3.3 / 5
13 300×300 1.1 / 2 / 3.3 / 5

 

List of round standard TEMPAX sizes and thicknesses

  Size (mm) Thickness (mm)
1 Φ10 1.1 / 2 / 3.3 / 5
2 Φ20 1.1 / 2 / 3.3 / 5
3 Φ30 1.1 / 2 / 3.3 / 5
4 Φ40 1.1 / 2 / 3.3 / 5
5 Φ50 1.1 / 2 / 3.3 / 5
6 Φ60 1.1 / 2 / 3.3 / 5
7 Φ70 1.1 / 2 / 3.3 / 5
8 Φ80 1.1 / 2 / 3.3 / 5
9 Φ90 1.1 / 2 / 3.3 / 5
10 Φ100 1.1 / 2 / 3.3 / 5
11 Φ150 1.1 / 2 / 3.3 / 5
12 Φ200 1.1 / 2 / 3.3 / 5
13 Φ300 1.1 / 2 / 3.3 / 5

 

Call us if you are in a hurry. We answer in as little as 1 minute.

15 thicknesses in total

There are a total of 15 thicknesses available.Please choose the thickness you prefer.

Size can be ordered in 1mm increments

We manufacture in 1mm increments according to your desired size. We can also cut to your desired size and shape.

Please check the maximum size chart as the size and shape that can be produced varies for each desired glass.

Thickness and maximum size

Thickness Thickness Tolerance Maximum size
0.7 mm ± 0.1 mm 850 x 1150 mm (2 kg)
1.1 mm ± 0.1 mm 850 x 1150 mm (3 kg)
1.75 mm ± 0.2 mm 850 x 1150 mm (4 kg)
2 mm ± 0.2 mm 850 x 1150 mm (5 kg)
2.75 mm ± 0.2 mm 850 x 1150 mm (7 kg)
3.3 mm ± 0.2 mm 850 x 1150 mm (8 kg)
3.8 mm ± 0.2 mm 850 x 1150 mm (9 kg)
5 mm ± 0.2 mm 1200 x 2300 mm (35 kg)
6.5 mm ± 0.2 mm 850 x 1150 mm (16 kg)
8 mm ± 0.3 mm 1200 x 2300 mm (55 kg)
10.2 mm ± 0.3 mm 850 x 1150 mm (25 kg)
12.2 mm ± 0.3 mm 850 x 1150 mm (30 kg)
13 mm ± 0.3 mm 850 x 1150 mm (32 kg)
15 mm ± 0.3 mm 850 x 1150 mm (37 kg)
20 mm ± 0.3 mm 850 x 1150 mm (49 kg)

*Weight is shown in parentheses () for reference

*If the weight exceeds what one person can carry (20kg~30kg), you may be asked to assist with unloading or prepare a forklift, etc.

*The thickness of our flat glass is produced and controlled within the limits of JIS regulations.

Supports drilling and other processing

Tempax (borosilicate glass) can be drilled. It has been adopted by customers who wish to thread a pipe or fit a screw into glass.

In addition to drilling, we can also cut shapes and perform complex processing, based on drawings and in collaboration with the customer. Please feel free to contact us.

Can be cut to any size you like.

TEMPAX (borosilicate glass) can be cut with a glass cutter up to 10mm thick.

For information on how to cut glass with a glass cutter, please see "How to Use a Glass Cutter". The use of the cutter is introduced in an easy to understand way with videos and pictures.

See how to use the glass cutter >

Summary

Use Grill area of a restaurant / Glass for lighting / Glass for bio-inspection / Bed glass of a 3D printer / Glass of an eco smart fireplace / Cover of an indicator light / Cover of an infrared sensor
Size ・26 types of standard products
・Can be produced in custom sizes.
Maximum size depends on thickness.
Feature ・Heat resistant glass (borosilicate glass) with a heat resistance temperature of 500℃
・Highly transmissive glass with no bluish tint
・Toughened processing is also available to increase thermal shock temperature and pressure resistance.
・Free sample requests are available to confirm color and texture.
Shape processing Complex shapes are possible.

Summary

Use Grill area of a restaurant / Glass for lighting / Glass for bio-inspection / Bed glass of a 3D printer / Glass of an eco smart fireplace / Cover of an indicator light / Cover of an infrared sensor
Size ・26 types of standard products
・Can be produced in custom sizes.
Maximum size depends on thickness.
Feature ・Heat resistant glass (borosilicate glass) with a heat resistance temperature of 500℃
・Highly transmissive glass with no bluish tint
・Toughened processing is also available to increase thermal shock temperature and pressure resistance.
・Free sample requests are available to confirm color and texture.
Shape processing Complex shapes are possible.
If you are unsure about the proper thickness or size, please call us. Please call us.
If you have any problems with size or thickness Please feel free to contact us.

FAQ

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