Strengthened glass articles having improved survivability

A strengthened glass article comprising:

• a thickness t≤1 mm,
• an inner region under a central tension CT, and
• at least one compressive stress layer adjacent the inner region and extending within the strengthened glass article from a surface of the strengthened glass article to a depth of layer DOL, wherein the DOL is greater than or equal to 70 μm,
• wherein strengthened glass article is under a compressive stress at the surface CSs,
• wherein the strengthened glass article is an alkali aluminosilicate glass article comprising 0mol % Li2O, at least 3 mol % Al2O3, and at least 5 mol % Na2O,
• and
• wherein the strengthened glass article has a stress profile such that a compressive stress CSD at an intermediate critical depth of 50 μm below the surface of the strengthened glass article is at least 10% of a compressive stress at the surface CSs, and the CT≤150 MPa.

A strengthened glass, the strengthened glass comprising:

• a thickness t≤1 mm,
• an inner region under a central tension CT, and
• at least one compressive stress layer under a compressive stress CS, the compressive stress layer extending from a surface of the glass to a depth of compression, p1 wherein the strengthened glass article has a stress profile such that a compressive stress CSD at an intermediate critical depth of 50 μm below the surface of the strengthened glass article is at least 10% of a compressive stress at the surface CSs,
• wherein the strengthened glass comprises 0 mol % Li2O, and
• wherein the strengthened glass has at least a 60% survival rate when dropped in a drop test from a height of at least 100 cm onto a drop surface comprising 180 grit alumina sandpaper utilizing a uniform drop rate procedure, wherein the survival rate is based on testing at least 5 samples.