Borosilicate Glass: Properties, Production and Applications

Known for its heat resistance and physical durability, borosilicate glass is useful in many applications mostly involved with temperature changes. The material owes its strength and resistance to its unique combination of silica, boric oxide, among various other oxides. The presence of boron oxide to replace some of the oxide components enhances the binding forces within the glass material.

Borosilicate glass properties

Low thermal expansion

With a thermal expansion coefficient of at least 3.2 x 10-6 1/K, pure borosilicate glass is significantly more resistant to temperature changes where other types of glass may become warped or deformed.

Its strength in thermal shock exposure makes the material suitable for laboratory heating and cookware. This characteristically low thermal expansion allows the material to maintain its integrity, even when transferred from a cold region (such as a refrigerator) to a hot area (like an oven) in seconds.

Modifications in the amount of its components may increase the thermal expansion coefficient to 7.38 x 10-6 1/K, but it is still much more resistant than ordinary soda-lime glass.

Other thermal properties of borosilicate glass include the following:

  • Annealing temperature = 470 - 640°C
  • Vicat softening temperature = 460 - 840°C
  • Transition temperature = 440 - 560°C

High material strength

Compared to similar glassware, borosilicate glass can withstand blunt force impact better. It has a Shear modulus of 26.5 – 27 GPa and Knoop hardness of 400 – 480 at 20°C.

Chemical stability

Borosilicate glass can withstand corrosion and breaking when exposed to acidic environments.

Production and processing

This special type of glass is produced from melting the following substances (with corresponding approximate composition): silica sand  (59.5%), boric oxide (21.5%), potassium oxide (14.4%), zinc oxide (2.3%), and trace amounts of calcium oxide and aluminium oxide.

Other variants – such as in cases wherein borosilicate glass is used as cookware – may change the silica composition to as high as 81%, depending on its intended use.

The melting process requires an exceedingly higher temperature than traditional glass production, owing to the material’s high transition temperature of up to 560°C.

Once the substrate has been produced, borosilicate glass may be processed in a number of ways depending on the application for the material. This glass material may be moulded or drawn into tubes, and processed into custom shapes and sizes.

Applications of borosilicate glass

Borosilicate glass has become useful in a wide variety of industries and applications, because of its physical and chemical properties.

Laboratory glassware

Borosilicate glass is popular as a base material for laboratory glassware, mainly because of the material’s chemical and thermal stability. Most of the modern beakers, flasks, and other glass receptacles designed for laboratory use are made of borosilicate glass.

Pharmaceutical glass tubing

Borosilicate glass is used for the manufacture of pharmaceutical containers like syringes, cartridges, vials and ampoules. The material is mostly chemically inert when in contact with most liquid medication products.

Cookware and kitchen implements

Owing to its remarkable thermal resistance, this glass material has found its way into kitchenware, particularly for cooking and baking. Popular cookware brands make use of borosilicate glass for baking dishes and glass cooking pots.

In addition, because of its low thermal expansion, this glass material is used for measuring cups and similar receptacles. Graduations labelled on the glass containers retain their accuracy because the material won’t warp when exposed to high temperatures.

Optical equipment

Due to the stability of borosilicate glass, it is a good material in fabricating slides and lenses for microscopes, telescopes, and other optical devices. Addition of doping agents may change the glass characteristics, such as optical absorption spectra.

Lighting technology

Lighting equipment requires glass receptacles and membranes that can withstand intense heat, and this is where borosilicate glass is extremely useful. Devices that use this glass type include HID lamps, modern high-powered flashlights, and studio spotlights.

Recent studies involve modifications in the chemical composition of borosilicate glass, through the addition of doping chemicals. Alteration in the photoluminescence spectra of the material is poised to become useful for solid state display, W-LED, and similar applications.


Did you know?

Borosilicate glass has a very low thermal expansion coefficient so that it holds up well over a wide temperature range, making it suitable for applications such as in laboratory glassware and baking cookware. Explore borosilicate glass materials on Matmatch.


Ingeniería eléctrica

Lámparas y equipos relacionados



Sistemas de instalación de iluminación




Farm Buildings


Glass In Building

Elementos de construcción

Elements Of Buildings In General




Interior Lighting

Bienes de consumo

Aplicaciones decorativas


Equipos radiográficos

Medical Equipment General

Seguridad medioambiental

Protección contra incendios

General Fire Protection

Equipos para el control de la contaminación

Pollution Control Equipment General

Sistemas de fluido

Almacenamiento de fluidos

Fluid Storage General


Mobile Vessels

Recipientes de presión


Water Pipelines


Couplings & Joints

Other Pipeline Components

Water Treatment


Equipos de cizallamiento


Herramientas de mano

Pneumatic Tools

Hornos industriales

Electric Furnaces


Mecheros y calderas

Calderas e intercambiadores de calor

Heat Exchangers In Energy

Industria química

Equipamiento para la industria química

Intercambiadores de calor

Energía solar

Solar Thermal

Aislamiento eléctrico

Aislamiento de vidrio y cerámica

Semiconductor Industry



Accesorios eléctricos

Fusibles y Ocp

Maquinaria rotativa



Componentes electrónicos


Tubos electrónicos




Equipos láser



Fibra óptica

Fibre Optic Connector

Other Fibre Optic Equipment


Manejo de materiales

Manejo continuo


Pneumatic Transport

Envasado de alimentos

Packaging Material

Botellas y tarros

Distribution & Vending Machines

Industria textil

Textile Auxiliary Materials

Industria alimentaria

Food Industry Containers

Equipos para la industria alimenticia

Producción de industria química

Química analítica

Equipos de laboratorio

Equipos de laboratorio

Chemical Analysis

Equipment For The Chemical Industry In General

Reaction Vessels

Reaction Columns

Industria del petróleo y el gas

Equipos para la industria del petróleo y el gas natural

Equipment For Petroleum & Natural Gas Industries In General

Volumetric Equipment

Glass In Industrial Applications

Gauge Glasses

Instalaciones en edificios


Water Heating

Drainage Systems

Lighting In General

Exterior Building Lighting


Commercial & Industrial Heating Appliances

Electric Heaters

Shop Fittings

Shop Fittings In General



Sellos vidrio-metal

Fluorescent Lamps



Disinfectants & Antiseptics

Signal Intensifier


Optoelectronics General


Wafer Production

Óptica e imagen


Photo Equipment & Projectors

Camera Parts


Mostrar todo