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SCHOTT AS 87 eco Ultra-Thin Aluminosilicate Glass

SCHOTT AS 87 eco is an ultra-thin aluminosilicate glass with extremely high levels of bending and impact strength and superior scratch resistance. It is an excellent choice for use as cover or enhancement glass on low profile displays, touch sensors and other applications where thickness and weight are a concern. Abrisa Technologies also provides the material with optional HIE™ chemical strengthening for even higher levels of Knoop and Vicker’s hardness, perfect for applications with high contact and frequent handling. Custom fabrication to size and shape, optical coatings, screen printed graphics and oleo/ hydrophobic coatings Total Solutions are available from Abrisa Technologies.

Strengthened Glass Test

Features

  • Ultra-Thin for Low Profile Designs
  • Optional HIE™ Strengthening
  • High Impact Damage Resistant
  • Excellent Clear Visual Quality
  • Broad Transmission Range (UVB to IR)
  • RoHS and REACH Compliant

Applications

  • Cover Glass for Displays & Touch Panels
  • Screen Protectors for Mobile Devices
  • Fingerprint Sensor
  • Ultra-Thin Glass Applications
  • Medical & Bio-Medical
  • Automotive Interiors
  • Camera Imaging

Dimensions

Sheet Sizes

  • 19.685″ x 15.748″ (500 mm x 400 mm)

Stock Thicknesses

  • 0.100 mm (0.0035” – 0.0043”)
  • 0.145* mm (0.0053” – 0.0061”)
  • 0.210* mm (0.0076” – 0.0088”)
  • 0.250* mm (0.0092” – 0.0104”)
  • 0.330* mm (0.0124” – 0.0136”)

*Can be strengthened.

SCHOTT AS 87 eco Spectral Transmittance
(λ = 200 nm – 3200 nm)

SCHOTT AS 87 eco Spectral Transmittance Graph

Mechanical Properties

Density ρ in g/cm3 (annealed at 40°C/h)
2.46
Young’s modulus E in kN/mm2
73.3
Torsion G modulus in kN/mm
30.1
Poisson’s ratio μ
0.216
Knoop hardness HK 0.1/20
500/560*
Vickers hardness HV 0.2/25
550/630*

Thermal Properties

CTE (Coefficient of thermal expansion) α in 10-6 · K-1 (20°C; 300°C)
8.7
Mean specific heat capacity cp in J/(g · K) (20°C to 100°C)
0.84
Transformation temperature Tg in °C
621
Viscosity lg Ƞ dPas
Temp in °C
Strain point 14.5
594
Annealing point 13.0
633
Softening point 7.6
872

Chemical Properties

Hydrolytic resistance class
HGB 2
Acid resistance class
S 4
Alkali resistance class
A 1

Optical Properties

Refractive index as drawn nD
1.5040 ± 0.0015
Abbe value ve
59.5

Transmittance values ᴛ (⅄) in %, thickness 0.175 mm

254 nm
46.3
380 nm
91.5
632.8 nm
92.1
1064 nm
92.2

Optical Properties

Dielectric constant ᴇr at ϑ = 25 °C

1 MHz
7.7
1 GHz
7.3
5 GHz
7.2

Dielectric constant ᴇr at ϑ = 25 °C

1 MHz
138 • 104
1 GHz
133 • 104
5 GHz
172 • 104
Conductivity at ϑ = 25 °C, direct current in S/cm
5.6 · 10-12
All Glass Materials
Spec Sheet

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