Selected White Float 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

• Substrates for optical coatings
• Substrate glass for anti-reflection coatings
• Electronic displays and components
• Measuring device windows
• Substrates for thin-film coatings
• Sensor Technology
• Machine windows
• Display technology
• Low-cost optics
• Thin glass applications

Related glass types

• BOROFLOAT^® 33 (borosilicate glass)
• B 270^®-Superwite (colorless clear crown glass)
• D 263 T (thin and ultra-thin borosilicate display glass)
• AF 32^® eco (alkali-free alumina-borosilicate thin glass)
• MEMpax^® (thin borosilicate glass)
• AS 87 eco (ultra-thin aluminosilicate glass)
• AF 45 (modified borosilicate display glass)
• 0211 (alkali-reduced borosilicate thin glass)

Request for Quotation

48-hour 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 high-volume applications are based on our selected float glass material. The 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

48-hour express service

 

Specifications

Transmission Curves

0.4 mm glass thickness:

• 250–450 nm
• 400–700 nm (visible range)
• 250–1100 nm

1.0 mm glass thickness:

• 250–450 nm
• 400–700 nm (visible range)
• 250–1100 nm

3.0 mm glass thickness:

• 250–450 nm
• 400–700 nm (visible range)
• 250–1100 nm

Standard Thicknesses

Please click on a glass thickness to request a quote.

Thickness (mm)	Tolerance
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: n_d = 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 data and specifications given are average guide values and are not guaranteed. Moreover, please consider the “Notes on Specifications”.

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Last update: March 19, 2025