A glass composition comprises: 50.0 mol % to 70.0 mol % SiO.sub.2; 10.0 mol % to 25.0 mol % Al.sub.2O.sub.3; 0.0 mol % to 5.0 mol % P.sub.2O.sub.3; 0.0 mol % to 10.0 mol % B.sub.2O.sub.3; 5.0 mol % to 15.0 mol % Li.sub.2O; 1.0 mol % to 15.0 mol % Na.sub.2O; and 0.0 mol % to 1.0 mol % K.sub.2O. The sum of all alkali oxides, R.sub.2O, present in the glass composition may be in the range from greater than or equal to 11.0 mol % to less than or equal to 23.0 mol %. The sum of Al.sub.2O.sub.3 and R.sub.2O present in the glass composition may be in the range from greater than or equal to 26.0 mol % to less than or equal to 40.0 mol %. The glass composition may satisfy the relationship −0.1≤(Al.sub.2O.sub.3—(R.sub.2O+RO))/Li.sub.2O≤0.3.

A glass-based article with a textured surface exhibiting low haze is provided. The glass-based articles are produced by utilizing a combination of abrasion and etching, where hydrofluoric acid is not utilized. The process for producing the glass-based articles also includes an ion exchange process.

A chemically strengthened glass sheet is provided that has a thickness of at least 3.3 mm and at most 6.0 mm and a composition, in mol% on an oxide basis, comprising the following components: SiO.sub.2 65 to 85 B.sub.2O.sub.3 3 to 13 .Math. (R.sub.2O + RO) 3 to 19, wherein R.sub.2O represents any of Li.sub.2O, Na.sub.2O, and K.sub.2O, and any combination thereof, and wherein RO represents any of MgO, CaO, SrO and BaO, and any combination thereof.

A glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t) of about 3 millimeters or less (e.g., about 1 millimeter or less), and a stress profile, wherein all points of the stress profile between a thickness range from about 0.Math.t up to 0.3.Math.t and from greater than about 0.7.Math.t to t, comprise a tangent with a slope having an absolute value greater than about 0.1 MPa/micrometer. In some embodiments, the glass-based article includes a non-zero metal oxide concentration that varies along at least a portion of the thickness (e.g., 0.Math.t to about 0.3.Math.t) and a maximum central tension of less than about 71.5/√(t) (MPa). In some embodiments, the concentration of metal oxide or alkali metal oxide decreases from the first surface to a point between the first surface and the second surface and increases from the point to the second surface. The concentration of the metal oxide may be about 0.05 mol % or greater or about 0.5 mol % or greater throughout the thickness. Methods for forming such glass-based articles are also disclosed.

In embodiments, a glass includes from 45 mol % to 70 mol % SiO.sub.2; from 11.5 mol % to 25 mol % Al.sub.2O.sub.3; from 2 mol % to 20 mol % Li.sub.2O; from greater than 0 mol % to 10 mol % Na.sub.2O; from 9 mol % to 19 mol % MgO; from 4 mol % ZrO.sub.2; and from 0 mol % to 0.5 mol % TiO.sub.2. In other embodiments, a glass includes from 45 mol % to 70 mol % SiO.sub.2; from 4 mol % to 25 mol % Al.sub.2O.sub.3; from 5 mol % to 20 mol % Li.sub.2O; from 0.1 mol % to 10 mol % Na.sub.2O; from 6 mol % to 25 mol % MgO; from 0.1 mol % to 4 mol % ZrO.sub.2; from 0.1 mol % to 5 mol % K.sub.2O; and from 0.05 mol % to 0.5 mol % SnO.sub.2.

The present invention is a glass sheet composite in which the loss coefficient is 1×10.sup.−2 or more and the longitudinal wave acoustic velocity in the sheet thickness direction is 5.5×10.sup.3 m/s or more.

The present invention is a glass sheet composite in which the loss coefficient is 1×10.sup.−2 or more and the longitudinal wave acoustic velocity in the sheet thickness direction is 5.5×10.sup.3 m/s or more.

The principles and embodiments of the present disclosure relate generally to complexly curved glass articles and methods of cold forming complexly curved glass articles, such as complexly curved glass articles having a first bend region with a set of first bend line segments, and a second bend region with a set of second bend line segments, wherein the first bend line segments and the second bend line segments are independent, are not parallel, and do not intersect.

Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of at least about 45 μm within the article are provided. In one embodiment, the compressive stress profile includes a single linear segment extending from the surface to the depth of compression DOC. Alternatively, the compressive stress profile includes two linear portions: the first portion extending from the surface to a relatively shallow depth and having a steep slope; and a second portion extending from the shallow depth to the depth of compression. The strengthened glass has a 60% survival rate when dropped from a height of 80 cm in an inverted ball drop test and a peak load at failure of at least 10 kgf as determined by abraded ring-on-ring testing. Methods of achieving such stress profiles are also described.

Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of at least about 45 μm within the article are provided. In one embodiment, the compressive stress profile includes a single linear segment extending from the surface to the depth of compression DOC. Alternatively, the compressive stress profile includes two linear portions: the first portion extending from the surface to a relatively shallow depth and having a steep slope; and a second portion extending from the shallow depth to the depth of compression. The strengthened glass has a 60% survival rate when dropped from a height of 80 cm in an inverted ball drop test and a peak load at failure of at least 10 kgf as determined by abraded ring-on-ring testing. Methods of achieving such stress profiles are also described.