• High degree of chemical strengthening with significant compressive stress and deep compression layer.
• High retained strength after use.
• High resistance to scratch damage.
• Pristine surface quality.

• Protective covers for electronic displays such as cellular phones, laptops, tablets, GPS, and other mobile devices.
• Optical components.
• High strength glass articles.
• Frangible glass parts.

• Standard sheet size: 405 mm x 460 mm.
• Available thicknesses: 0.7mm – 2.0mm.

• Softening Point: 837°C.
• Annealing Point: 602°C.
• Strain Point: 553°C.

• Density: 2.45 g/cm³.
• Young’s Modulus: 73.3 GPa.
• Poisson’s Ratio: 0.21.
• Shear Modulus: 30.1 GPa.
• Vickers Hardness (200g load): Un-strengthened 622 kgf/mm², Strengthened 701 kgf/mm².
• Fracture Toughness: 0.7 MPa m^1/2.
• Thermal Coefficient of Expansion (0-300°C): 91 x 10^-7/°C.

• Refractive Index (633 nm): Core glass 1.5031, Compression layer 1.5114.
• Photo-elastic constant: 31.8 nm/cm/MPa.

• Compressive stress capable of > 800 MPa.
• Depth of layer capable of > 100 μm.

A key aspect of the design includes selecting the appropriate magnitude of compressive stress and depth of compression layer for the application.

For additional information or to request a sample, contact Corning Incorporated, Technical Materials, HP-CB-08, Corning, NY 14831. Phone: +1-978-442-2283, Fax: +1-607-974-7618.