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Sodalime Optical Glass

Sodalime Optical Properties
Thermal Properties
Thermal Coefficient of Expansion (0/300°C): 86 X 10 -7/°C
Annealing Point 546°C / 1015 °F
Softening Point 726°C / 1340 °F
Strain Point 514°C / 957 °F

Mechanical Properties
Density 2.44 g/cm3 @ 20°C / 68°F
Knoop Hardness 585 Kg/mm2 + 20
Young's Modulus 7.2 X 1010 Pa
Poisson's Ratio .22

Optical Properties
Refractive Index 1.523 (435 nm), 1.513 (645 nm)

Chemical Properties
Hydrolytic Resistance class 3
Acid Resistance N/A
Alkali Resistance N/A

Electrical Properties
Dielectric Constant 7.75 @ 20°C E