Optical Glass picture, Selected Floatglass
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Selected White Float Glass

Cost-effective, high-quality thin glass

Special Properties

  • High optical transmittance
  • White and clear appearance 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. In particular, at smaller dimensions, the glass features a white appearance which is resulting from the iron reduced glass composition.

Numerous glass applications are based on our selected float glass material. CNC-processed selected floatglass partsThe excellent optical performance from the visible to the infrared range makes the glass a very versatile material that can even be used for technical optics. It has almost no inclusions, a high purity, and proved to be able to substitute expensive glass materials in many optical applications. The cost savings in such cases often are significant.

The production of thin glasses with the help of 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 +/-0,20
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 x 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".

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