Sheet glass D 263® T eco

Easy adaption for product miniaturization D 263® T eco is a clear borosilicate glass that has high chemical resistance and is produced by using a SCHOTT-specific down-draw method. It is available in a variety of thicknesses ranging from 0.03 mm to 1.1 mm. D 263® T eco borosilicate glass is available from stock in standard sheet sizes or it can be custom-cut into round or square shapes. It is used as substrate glass for coatings or as a replacement for plastic for applications in the automotive and electronics industries. D 263® T eco is manufactured with eco-friendly refining agents instead of arsenic and antimony. Advantages • Fire-polished surface with low roughness • Not permeable to humidity • Flexibility similar to plastic • Easy to cut • High luminous transmittance • Easy to process • High chemical resistance • Coefficient of thermal expansion matches with metals for hermetic sealings • Coatings adhere well due to excellent surface quality • Smooth surface for coatings without previous polishing • Range of thin thicknesses enables easy adaptation for future product miniaturization • Production without use of refining agents arsenic and antimony • Low-level mobility of alkali ions Technical Data Dimensions : 510 mm x 430 mm, other sizes upon request Surface roughness : < 1 nm RMS Thicknesses : 0.03 mm up to 1.1 mm Luminous transmittance τvD65 (d = 1.1 mm) : 91.7% Coefficient of mean linear thermal expansion α (20 °C; 300 °C) (static measurement) : 7.2 ⋅ 10-6 K-1 Transformation temperature Tg : 557 °C Dielectric constant εr at 1 MHz : 6.7 Refractive index nD : 1.5230 Refractive index ne : 1.5255 ± 0.0015 Density ρ (annealed at 40 °C/h) : 2.51 g/cm3