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.
Table 5. Chemical Durability
Reagent
Time
Temperature (ºC)
Weight Loss (mg/cm2)
HCl - 5%
24 hrs
95
5.9
NH4F:HF - 10%
20 min
20
1.0
HF - 10%
20 min
20
25.2
NaOH - 5%
6 hrs
95
2.7
Technology and components
13
Summary of Contents for Latitude 7400 2-in-1
Page 24: ...4 Pry along the left right and bottom edges of the base 24 Removing and installing components ...
Page 43: ...5 Place the metal shield on the WWAN card Removing and installing components 43 ...
Page 51: ...8 Adhere the Mylar sheet on the system board Removing and installing components 51 ...
Page 56: ...4 Remove the metal foil from the heatsink shield 56 Removing and installing components ...
Page 57: ...5 Remove the heatsink shield from the system board Removing and installing components 57 ...
Page 60: ...3 Place the heatsink shield on the heatsink 60 Removing and installing components ...
Page 61: ...4 Adhere the metal foils on the heatsink shield Removing and installing components 61 ...
Page 87: ...8 Lift the keyboard off the palmrest assembly Removing and installing components 87 ...
