Home / Products / Technical Glass / Selected float glass

Selected White Float Glass

Cost-effective, high-quality thin glass

Special Properties

  • High optical transmittance
  • White and clear appearance, especially at small dimensions
  • Reduced iron content compared to ordinary glass
  • Excellent optical flatness and surface quality
  • Low micro-roughness
  • Economically priced

Typical Applications

  • Substrates for optical coatings
  • Base glass for antireflection coated windows
  • Electronic displays and components
  • Sight glass applications
  • Machine windows
  • Substrates for thin-film coatings
  • Sensor Technology
  • Display technology
  • Measuring window
  • Low-cost windows
  • Thin glass applications
  • Glass covers for fire alarm buttons

Related glass types

Request for Quotation

48h-Express Service Also available in 48 h Express-Service

Our selected float glass is a universal, economically priced, high-quality technical glass with excellent optical characteristics. The glass features a white appearance at smaller dimensions, resulting from the iron-reduced glass composition.

Numerous applications work based on our selected float glass material. CNC-processed selected floatglass partsThe excellent optical performance from visible to infrared range makes the glass a versatile material many customers use for technical optics. It has almost no inclusions, high purity, and has proven to be a high-quality replacement for expensive glass materials in many optical applications. The cost savings in such cases often are significant.

The production of thin glasses with the high-quality micro float process guarantees an excellent optical flatness, an extremely low deviation from the nominal thickness within each batch, and a very low standard thickness tolerance. A large selection of standard thicknesses beginning at 0,4 mm plus a high surface quality allows an efficient fabrication of many optical components and bulk optics based on this economically priced glass.

To request a quotation for windows or substrates made of selected float glass with individual dimensions, please choose a thickness of the table in the specifications or click the button below.


Request for Quotation

48h-Express Service Also available in 48 h Express-Service



Transmission Curves

0,4 mm glass thickness:

1,0 mm glass thickness:

3,0 mm glass thickness:

Standard Thicknesses

(Please click on a glass thickness to request a quote)

Thickness (mm)


48h-Express Service
0,40 +/-0,05
0,55 +/-0,05
0,70 +/-0,05
0,95 +/-0,05
1,00 +/-0,10
1,25 +/-0,05
1,60* +/-0,10
2,00 +/-0,20
3,00 +/-0,22
4,00 +/-0,20
The thicknesses marked with "" are also available within 48–h Express Service.
*This thickness does not have reduced iron content.

Optical Properties

  • Refractive Index: nd = 1,520 (588 nm)

Mechanical Properties

  • Density: 2,49 g/cm3
  • Young's Modulus: 70 (±2) GPa

Thermal Properties

  • Coefficient of Thermal Expansion (0-300 °C):
    87 × 10-7
  • Strain Point: 519 °C

Chemical Properties

  • Hydrolytic Resistance:
    • (ISO 719) Class 3
    • (DIN 12.111) Class 3

Electrical Properties

  • Dielectric Constant 7,75 (25 °C ; 1 MHz)
  • Specific Resistivity 9,7 [Log R (Ω cm)]
    (25 °C ; 1000 Hz)

All given details and specifications are mean reference values and are not guaranteed. Also, please consider our "Notes on technical specifications".

© 1994 – 2023 Präzisions Glas & Optik GmbH