• High strength glass articles
Dimensions
Thickness: 0.4 mm
Viscosity
Table 2. Viscosity
Parameters Vectors
Softening Point (10
7.6
poises) 884˚C
Annealing Point (10
13.2
poises) 623˚C
Strain Point (10
14.7
poises) 571˚C
Properties
Table 3. Properties
Density 2.43 g/cm
Youngs Modulus 76.7 GPa
Poissons Ratio 0.21
Shear Modulus 31.7 GPa
Vickers Hardness (200 g load)
• Un-strengthened
• Strengthened
489 kgf/mm
2
596 kgf/mm
2
596 kgf/mm
2
Fracture Toughness 0.69 MPa m
0.5
Coefficient of Expansion (0 ˚C - 300 ˚C) 78.8 x 10
-7
/°C
Chemical Strengthening
Capability of >850MPa CS, at 50 µm Depth Of Layer(DOL)
Specifications subject to change
Optical
Table 4. Optical
Refractive Index (590 nm)
Core glass** 1.50
Compression layer 1.51
Photo-elastic constant 30.3 nm/cm/MPa
** Core index is used for FSM-based measurements since it is unaffected by ion-exchange conditions.
Chemical Durability
Durability is measured via weight loss per surface area after immersion in the solvents shown below. Values are highly dependent upon
actual testing conditions. Data reported is for Corning Gorilla Glass 5.
10
Technology and components
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