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Home / Products / Technical Glass / SCHOTT D 263 T Thin Glass

D263 T Thin Glass

Thin and ultra thin glass

Special Properties

  • Low micro roughness (typically < 1nm RMS)
  • Excellent flatness
  • Clear and practically colorless appearance
  • Good chemical resistance
  • Very thin standard thicknesses (down to 0,03mm)
  • Colorless borosilicate glass composition

Typical Applications

The specific properties and a large range of standard thicknesses make D263 speciality glass a good choice for many technical glass applications. All D263 thin and ultra thin glass substrate materials feature an excellent optical flatness and a very good surface quality. Due to the very smooth fire-polished surfaces, D 263 T glass usually can be used without the requirement of additional mechanical polishing. The micro roughness of the glass surfaces typically is better than 1nm (RMS). D263 borosilicate thin glass made by SCHOTT is produced by melting very pure raw materials. The thin special glass is very resistant to chemical attack. It has a high and uniform transmission in the visible range. But also in the range of up to 3000nm, it offers a high infrared transmittance that cannot be achieved by most other glass materials (IR-transmittance curve can be obtained on request). D263 glass is available from stock at various thin and ultra thin thicknesses and at very low thickness tolerances.



To get a quotation for windows or substrates of original SCHOTT D 263 T or D 263 T eco borosilicate glass with individual dimensions, please click the button below:


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Specifications


Transmission at 0,15mm thickness

D263 optical transmission 0,15mm

Transmission of D263 at 0,15mm glass thickness

 

Transmission at 0,7mm thickness

D263 optical transmission at 0,7mm thickness

Transmission of D263 at 0,70mm glass thickness

 

UV-Transmission at 0,7mm thickness

D263 UV-transmission at 0,7mm

UV-Transmission of D263 at 0,70mm glass thickness

 

Optical Properties

  • Abbe number: ve = 55

Refractive index chart

Designation

Wavelength (nm)

Refractive Index

ng
436
1,5354
nF'
480
1,5305
nF
486
1,5300
ne
546
1,5255
nd
587,5
1,5231
nD
589,3
1,5230
nC'
644
1,5209
nC
656
1,5204

Mechanical Properties

  • Density: 2,51 g/cm3
  • Young's modulus E: 72,9 kN/mm2
  • Poisson's ratio μ: 0,208
  • Torsion modulus G: 30,1 kN/mm2
  • Knoop hardness HK100: 590

Thermal Properties

  • Coefficient of mean linear thermal expansion
    (static measurement): 7,2 x 10-6/K (20-300°C)
  • Viscosities:
    • Working Point (104 dPa): 1051°C
    • Softening Point (107,6 dPa): 736°C
    • Annealing Point (1013 dPa): 557°C
    • Strain Point (1014,5 dPa): 529°C
  • Transformation temperature Tg: 557°C
  • Mean specific heat capacity (20-100°C):
    0,82 J/(g x K)

Chemical Properties

  • Hydrolytic Resistance according to DIN ISO 719:
    • Hydrolytic Class HGB 1
    • Equivalent of Alkali (Na2O) per g of glass grains:
      20 μg/g
  • Acid Resistance according to DIN 12 116:
    • Acid Class S2
    • Half surface weight loss after 6h:
      1,4 mg/dm2
  • Alkali Resistance according to DIN ISO 695:
    • Alkali Class A2
    • Surface weight loss after 3h:
      88 mg/dm2

Electrical Properties

  • Dielectric constant εr: 6,7 (1Mhz)
  • Dielectric Loss tangent (tan δ): 61 x 10-4 (1 MHz)
  • Specific AC-Volume Resistivity ρD (Ω x cm):
    • 1,6 108 (250°C / 50 Hz)
    • 3,5 x 106 (350°C / 50 Hz)

Available Thicknesses

Thick-
ness
(mm)

Tol.

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Thick-
ness
(mm)
Tol.
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0,030 ±0,008     - 0,30 ±0,02     X
0,050 ±0,01     - 0,40 ±0,02     X
0,070* ±0,01     - 0,50* ±0,05     -
0,100 ±0,015     X 0,55 ±0,05     X
0,145 ±0,015     X 0,70 ±0,05     X
0,175 ±0,015     X 0,90* ±0,05     -
0,210 ±0,02     X 1,10 ±0,05     X
*These thicknesses are currently not available. Please send us your inquiry in case of need.
The thicknesses marked with X are available within 48-h Express Service.

For further technical information, please contact us.


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