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Selected White Float Glass

Cost-effective, high-quality thin glass

Special Properties

  • High optical transmittance
  • White and clear appearance, especially at small dimensions
  • Has a lower iron content than ordinary soda-lime glass
  • Excellent optical flatness and surface quality
  • Low micro-roughness
  • Economically priced

Typical Applications

Related glass types

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

The production of thin glasses with the high-quality micro-float process guarantees exceptional optical flatness, an extremely low deviation from the nominal thickness within each batch, and a low standard thickness tolerance. A large selection of standard thicknesses beginning at 0,4 mm and a high surface quality allow for the efficient fabrication of 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 from the table in the specifications or click the button below.


Request for Quotation

48h-Express Service 48-hour 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–hour express service.
*This thickness has a normal iron content and is not iron-reduced.

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".

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Last update: May 21, 2024