Corning Gorilla® Glass 4 Touch Screen Glass

Category	Ceramic , Glass , Optical
Manufacturer	Corning Incorporated
Trade Name	Gorilla® Glass 4
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Corning Gorilla® Glass 4 Touch Screen Glass.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

Gorilla® Glass 4 is just as thin and light as previous versions of Gorilla® Glass, but has been formulated to deliver dramatically improved damage resistance allowing improved in-field performance. Corning® Gorilla® Glass 4 has been tested for performance when subjected to sharp contact damage, such as asphalt and other real-world surfaces. This glass is widely used in smart phone, tablet, and laptop displays, other touchscreens, optical components, and other high strength glass applications.Information provided by Corning Incorporated.

Physical Properties	Metric	English	Comments
Density	2.42 g/cc	0.0874 lb/in³
Thickness	400 - 1000 microns	15.7 - 39.4 mil	Standard; others available upon request

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	489	489	kgf/mm²;' unstrengthened (200 g load)
	596	596	kgf/mm²; strengthened (200 g load)
Modulus of Elasticity	65.8 GPa	9540 ksi
Compressive Strength	>= 850 MPa	>= 123000 psi	Chemically Strengthened to >50 µm Depth
Poissons Ratio	0.22	0.22
Fracture Toughness	0.670 MPa-m½	0.610 ksi-in½
Shear Modulus	26.0 GPa	3770 ksi

Thermal Properties	Metric	English	Comments
CTE, linear	8.69 µm/m-°C @Temperature 0.000 - 300 °C	4.83 µin/in-°F @Temperature 32.0 - 572 °F
Softening Point	912 °C	1670 °F	10<sup>7.6</sup> Poise
Annealing Point	646 °C	1190 °F	10<sup>13.2</sup> Poise
Strain Point	596 °C	1100 °F	10<sup>14.7</sup> Poise

Optical Properties	Metric	English	Comments
Refractive Index	1.49 @Wavelength 590 nm	1.49 @Wavelength 590 nm	core glass
	1.51 @Wavelength 590 nm	1.51 @Wavelength 590 nm	compression layer
Transmission, Visible	>= 91.5 % @Wavelength 450 - 2100 nm	>= 91.5 % @Wavelength 450 - 2100 nm
IR Transmittance	>= 90.0 % @Wavelength 2100 - 2500 nm	>= 90.0 % @Wavelength 2100 - 2500 nm
	>= 91.5 % @Wavelength 700 - 2100 nm	>= 91.5 % @Wavelength 700 - 2100 nm
UV Transmittance	0.0 % @Wavelength <=250 nm	0.0 % @Wavelength <=250 nm
	>= 91.5 % @Wavelength 380 nm	>= 91.5 % @Wavelength 380 nm

Electrical Properties	Metric	English
Dielectric Constant	7.33 @Frequency 2.986e+9 Hz	7.33 @Frequency 2.986e+9 Hz
	7.34 @Frequency 2.466e+9 Hz	7.34 @Frequency 2.466e+9 Hz
	7.37 @Frequency 1.977e+9 Hz	7.37 @Frequency 1.977e+9 Hz
	7.39 @Frequency 1.50e+9 Hz	7.39 @Frequency 1.50e+9 Hz
	7.43 @Frequency 9.1e+8 Hz	7.43 @Frequency 9.1e+8 Hz
	7.60 @Frequency 5.990e+8 Hz	7.60 @Frequency 5.990e+8 Hz
	7.63 @Frequency 4.90e+8 Hz	7.63 @Frequency 4.90e+8 Hz
	7.66 @Frequency 3.81e+8 Hz	7.66 @Frequency 3.81e+8 Hz
	7.70 @Frequency 2.72e+8 Hz	7.70 @Frequency 2.72e+8 Hz
	7.77 @Frequency 1.63e+8 Hz	7.77 @Frequency 1.63e+8 Hz
	7.89 @Frequency 5.40e+7 Hz	7.89 @Frequency 5.40e+7 Hz
Dissipation Factor	0.0230 @Frequency 4.90e+8 Hz	0.0230 @Frequency 4.90e+8 Hz
	0.0240 @Frequency 5.99e+8 Hz	0.0240 @Frequency 5.99e+8 Hz
	0.0240 @Frequency 9.12e+8 Hz	0.0240 @Frequency 9.12e+8 Hz
	0.0240 @Frequency 1.63e+8 Hz	0.0240 @Frequency 1.63e+8 Hz
	0.0240 @Frequency 2.72e+8 Hz	0.0240 @Frequency 2.72e+8 Hz
	0.0240 @Frequency 3.81e+8 Hz	0.0240 @Frequency 3.81e+8 Hz
	0.0250 @Frequency 1.499e+9 Hz	0.0250 @Frequency 1.499e+9 Hz
	0.0250 @Frequency 1.977e+9 Hz	0.0250 @Frequency 1.977e+9 Hz
	0.0260 @Frequency 2.466e+9 Hz	0.0260 @Frequency 2.466e+9 Hz
	0.0260 @Frequency 5.4e+7 Hz	0.0260 @Frequency 5.4e+7 Hz
	0.0270 @Frequency 2.986e+9 Hz	0.0270 @Frequency 2.986e+9 Hz

Descriptive Properties	Value	Comments
Photo-elastic Constant	30.3 nm/cm/MPa

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