Borosilicate

 Borosilicate is the material of choice for many industries because of its affordability — especially the biomedical and research industries.

BorofloatBorosilicate glass remains both clear and strong when exposed to high temperatures. In addition to standard borosilicate, Swift Glass also offers infrared reflecting borosilicate (IRR Borosilicate), also commonly known as a hot mirror.

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A hot mirror has an Indium Tin Oxide coating on one surface, which is transparent to the visible spectrum and reflects a portion of the infrared spectrum back at the light source. This is mostly used in the high heat environments to protect the interior components of cameras, film in projectors, colored lenses or even people from heat caused by intense light sources.

Swift Glass offers a variety of borosilicate glass from major manufacturers like Corning and Schott, including the following brands:

Borosilicate Materials by Schott

  • Borofloat® glass is a clear and transparent colorless glass.  Its excellent transmission and very weak flourescence intensities over the entire light spectrum make it ideal for a wide range of applications in optics, optoelectronics, photonics and analytical equipment.  Borofloat® offers outstanding thermal resistance, exceptionally high transparency, high chemical durability and excellent mechanical strength.
  • SCHOTT D263® is a thin borosilicate glass with low alkali content produced with extremely pure raw materials making it highly chemical resistant.  It has excellent surface quality that can be coated without any post-process surface work. The combination of these traits makes D263® highly versatile.
  • Supremax® Rolled Borosilicate is almost identical in its properties to Borofloat®.  It is a versatile borosilicate glass with excellent thermal properties, chemical resistance, and good light transmission material for its thickness. Supremax® Rolled Borosilicate also has a low density and therefore higher transmissivity compared to that of soda lime glass.  This comes in thicknesses up to 57.2 mm (2.250″.)
  • BK7® glass is an extremely common crown glass used in precision lenses.  BK7® performs well in chemical tests and no special handling is required.

Borosilicate Materials by Corning

  • Pyrex®: Because of its borosilicate composition, Pyrex® code 7740 glass resists attack by all acids except hydrofluoric and hot phosphoric.  The low coefficient of thermal expansion allows it to withstand higher temperatures and temperature excursions than ordinary window glass.
  • Pyrex®Flat Glass: Because of its borosilicate composition, Pyrex® code 7740 glass resists attack by all acids except hydrofluoric and hot phosphoric.  The low coefficient of thermal expansion allows it to withstand higher temperatures and temperature excursions than ordinary window glass.  It features a very smooth surface and low micro roughness.
  • Furnace Observation Glass: Corning’s #5331 furnace observation blue borosilicate glass is a dark colbalt blue glass that is a low expansion glass for added heat resistance in furnace site glass applications. The color is specifically designed to view flame for accurate settings or readings and still protect the viewer from harmful IR and UV rays.

Swift Glass – Annular Edge

  • Standard: Annular Edge offers a ground flat and parallel gasketing surface used for sealing in a flange.  It is annealed for low pressures.  It is used where optical properties are not of prime importance.
  • High Pressure: High-Pressure Annular Edge offers a ground flat and parallel gasketing surface used for sealing in a flange.  It is tempered for high pressure and high thermal shock applications.  It is used where optical properties are not of prime importance.

To learn more about how borosilicate fits into your application, contact Swift Glass today.

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