SCHOTT Xensation® 3D

Chemical strengthened lithium alumino-silicate cover glass for tough applications – from smartphone to safety glazing

Key-Benefits

  • Outstanding results in set drop performance for very high survival likelihhod after smartphone drops
  • Extremely high impact and bending strength for thinner, sleeker and more touch sensitive solutions
  • High scratch and wear resistance for superior aesthetic appeal, durability, strength and reliability even after surface damage
  • Thermal bending at similar temperatures to soda-lime glass
  • Manifold combinations of CS and DoL possible
Mechanical Properties
Density ρ 2.49 g/cm3
Young’s Modulus E 83 kN/mm2
Poisson’s ratio ν 0.22
Shear Modulus G 34 kN/mm2
Knoop Hardness HK 0.1/20  
   non-strengthened 590
   strengthened 740
Vickers Hardness HV 0.2/20  
   non-strengthened 640
   strengthened 690
Optical Properties
Refractive Index at 365 nm 595 nm 640 nm
Core Glass 1.548 1.528 1.525
Compression Layer
KNO3 pure
 
1.56 1.53 1.53
Photoelastic Constant
nm/(cm*MPa)
29.6 27.4 27.2
Transmittance τ  0.7 mm 3.0 mm 8.0 mm
840 nm > 91 % > 91 % > 91 %
560 nm > 91 % > 90 % > 90 %
380 nm > 90 % > 85 % > 85 %
Thermal Properties
Thermal Conductivity λ (25 °C) 1.22 W/(m·K)1
Specific Heat Capacity Cp (20 °C; 100 °C) 0.9 J/(g·K)
Coefficient of Mean Linear
Thermal Expansion α (20 °C; 300 °C)
8.5 · 10-6 K-1
Transformation Point Tg 505 °C
Annealing Point (1013 dPas) 515 °C
Softening Point (107.6 dPas) 720 °C
Working Point (104 dPas) 1070 °C
Electrical Properties*
Frequency (MHz) Dielectric Constant (ɛ́)       Loss Tangent (tan δ)
1 7.60 0.0064
54 7.37 0.0063
480 7.35 0.0082
825 7.22 0.0088
912 7.22 0.009
1977 7.18 0.010
2170 7.17 0.010
2986 7.15 0.010

* These values are no guaranteed data – for customer orientation only.
Chemical Properties
Hydrolytic resistance acc. to DIN ISO 719         
Hydrolytic class HGB 2
Equivalent of alkali (Na2O) per gram of glass grains [μg/g] 41
Acid resistance acc. to DIN 12116
Acid class S 3
Half surface weight loss after 6 hours in mg/dm2 10
Alkali resistance acc. to DIN ISO 695
Class A1
Surface weight loss after 3 hours in mg/dm2 41
Chemical Strengthening*
Compressive stress (K-CS) capable > 700 MPa
Depth of layer (Na-DoL) capable > 120 μm
4-Point bending strength capable > 600 MPa

* Specialized strengthening process is required.
Forms supplied*
Thickness Range: 0.55 – 0.80 mm
Sheet size: 1,150 x 950 mm

* Further thicknesses and sheet sizes are available on request.
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