Standard / AR / Flint Glass

Glass Type: Soda Lime


Soda lime, also known as AR/Flint or Float glass, contains both sodium and calcium and is formed by drawing the glass over molten tin baths or redrawing into rod or tubing. Because of its chemical properties, Soda Lime can also be chemically strengthened to harden the surface and make it more scratch and break resistant. SGP can lap, polish, form, cut, and chemically strengthen this material to many shapes, sizes and surface finishes.

Thermal PropertiesMechanical Properties
Thermal Coefficient of Expansion (0/300⁰C): 86 X 10 -7/⁰CDensity2.44 g/cm3 @ 20⁰C / 68⁰F
Annealing Point546⁰C / 1015 ⁰FKnoop Hardness585 Kg/mm2+20
Softening Point726⁰C / 1340 ⁰FYoung’s Modulus7.2 x 1010 Pa
Strain Point514⁰C / 957 ⁰FPoisson’s Ratio.22
Chemical PropertiesElectrical Properties
Hydrolytic Resistanceclass 3Dielectric Constant7.75 @ 20⁰C E
Acid ResistanceN/AResistivityN/A
Alkali ResistanceN/ADielectric StrengthN/A
Optical Properties
Refractive Index1.523 (435 nm), 1.513 (645 nm)