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SCHOTT Xensation® Aluminosilicate Cover Glass

SCHOTT Xensation™ is a high-quality alumino-silicate glass with outstanding resistance to breakage and scratches for all cover and touch applications, including capacitive, resistive, optical, and acoustic.

SCHOTT Xensation™ Cover is a high-quality Alumino-silicate glass with outstanding resistance to breakage and scratches for capacitive touch technologies.

SCHOTT Xensation™

Features

  • SCHOTT’s unique microfloat manufacturing process gives the Xensation™ Cover alumino-silicate glass its excellent sheet quality.
  • Due to the impressively high Compressive Stress (CS) and Depth of Layer (DoL), Xensation™ Cover offers outstanding strength.
  • The robust nature of Xensation™ Cover results in very stable CS, DoL and overall strength even under varying chemical strengthening conditions. This enables a broad process window.
  • Xensation™ Cover maintains its high strength even when process optimization calls for shorter ion exchange. Xensation™ Cover is available in a wide range of thicknesses with tight tolerances.

Dimensions

Sheet Size*
1150 x 950 mm, 475 x 575 mm
Thickness Range
0.55 to 2 mm stocked

Contact us for other requirements.

Thermal Properties

Thermal Conductivity λ (25 °C)
0.96 W/(m•K)
Specific Heat Capacity Cp (20 °C; 100 °C)
0.84 KJ/(Kg•K)
Coefficient of Mean Linear Thermal Expansion α (20 °C; 300 °C)
8.8 • 10-6 K-1*
Transformation Point Tg
615 °C*
Annealing Point (1013 dPas)
635 °C
Softening Point (107.6 dPas)
880 °C
Working Point (104 dPas)
1265 °C

*Cooled according to DIN

Chemical Properties

Hydrolytic Resistance
DIN ISO 719
Class HGB 1
Acid Resistance
DIN 12116
Class S 4
Alkali Resistance
DIN ISO 695
Class A 1

Optical Properties

Refractive Index at
588 nm (nd)
633 nm
780 nm
Core Glass
1.508
1.506
1.502
Compression Layer KNO3 pure
1.516
1.514
1.510

Transmittance τ (Glass Thickness 0.7mm)

840 nm
> 91.5%
560 nm
> 91.5%
380 nm
> 90%
Photoelastic Constant
29.2 nm/cm/MPa

Electrical Properties

Frequency MHz
Dielectric Constant ε'
Loss Tangent tanδ
1
7.74
0.011
54
7.49
0.008
480
7.40
0.009
825
7.38
0.010
912
7.38
0.010
1977
7.35
0.012
2170
7.35
0.012
2986
7.34
0.012

Electric Volume Resistivity ρD for A.C. at 50Hz

ν = 250 °C
1.5 • 106Ω•cm
ν = 350 °C
8.9 • 104Ω•cm

* These values are not guaranteed data – for customer orientation only.

Mechanical Properties

Density
2.477 b/cm3*
Young's Modulus E
74 kN/mm2
Poisson's Ration
0.215
Shear Modulus
30 kN/mm2
Knoop Hardness HK0.1/20
Non-Strengthened
534
Strengthened
639
Vockers Hardness HV0.2/20
Non-Strengthened
617
Strengthened
681

*Cooled according to DIN

Chemical Strengthening

Compressive Stress
capable >900 MPa
Depth of Layer
capable >50μm
4-Point Bending Strength
capable >800 MPa

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