This is a list of some physical properties of common glasses. Unless otherwise stated, the technical glass compositions and many experimentally determined properties are taken from one large study."High temperature glass melt property database for process modeling"; Eds.: Thomas P. Seward III and Terese Vascott; The American Ceramic Society, Westerville, Ohio, 2005, Unless stated otherwise, the properties of fused silica (quartz glass) and germania glass are derived from the SciGlass glass database by forming the arithmetic mean of all the experimental values from different authors (in general more than 10 independent sources for quartz glass and Tg of germanium oxide glass).
The list is not exhaustive.
Properties Soda–lime glass (for containers)Soda–lime glass for containers is slightly different from soda–lime glass for windows (also called flat glass or float glass). Float glass has a higher magnesium oxide content as compared to container glass, and a lower silica and calcium oxide content. For further details see main article Soda–lime glass. Borosilicate (low expansion, similar to Pyrex, Duran) Glass wool (for thermal insulation) Special optical glass (similar toLead crystal) Fused silica Germania glass Germanium selenide glass Chemicalcomposition,wt% 74 SiO2, 13 Na2O, 10.5 CaO, 1.3 Al2O3, 0.3 K2O, 0.2 SO3, 0.2 MgO, 0.01 TiO2, 0.04 Fe2O3 81 SiO2, 12.5 B2O3, 4 Na2O, 2.2 Al2O3, 0.02 CaO, 0.06 K2O 63 SiO2, 16 Na2O, 8 CaO, 3.3 B2O3, 5 Al2O3, 3.5 MgO, 0.8 K2O, 0.3 Fe2O3, 0.2 SO3 41.2 SiO2, 34.1 PbO, 12.4 BaO, 6.3 ZnO, 3.0 K2O, 2.5 CaO, 0.35 Sb2O3, 0.2 As2O3 SiO2 GeO2 GeSe2 Viscositylog(η, Pa·s) = A +B / (T in °C - To) 550–1450 °C:A = -2.309B = 3922To = 291 550–1450 °C:A = -2.834B = 6668To = 108 550–1400 °C:A = -2.323B = 3232To = 318 500–690 °C:A = -35.59B = 60930To = -741 1140–2320 °C:A = -7.766B = 27913To = -271.7 515–1540 °C:A = -11.044B = 30979To = −837 Glass transitiontemperature, Tg, °C 573 536 551 ~540 1140 526 ± 2735 Tg data for GeO2 from SciGlass 6.7 395 Coefficient ofthermal expansion,ppm/K, ~100–300 °C 9 3.5 10 7 0.55 7.3 Densityat 20 °C, [g/cm3], x1000 to get [kg/m3] 2.52 2.235 2.550 3.86 2.203 3.65 4.16 Refractive index nDThe subscript D indicates that the refractive index n was measured at a wavelength λ of 589.29 nm, F and C indicate 486.13 nm (blue) and 656.27 nm (red) respectively (see article Fraunhofer lines) at 20 °C 1.518 1.473 1.531 1.650 1.459 1.608 1.7 Dispersion at 20 °C,104×(nF - nC) 86.7 72.3 89.5 169 67.8 145 Young's modulusat 20 °C, GPa 72 65 75 67 72 43.3 Shear modulusat 20 °C, GPa 29.8 28.2 26.8 31.3 Liquidustemperature, °C 1040 1070Valid for glass composition, wt%: 80.7 SiO2, 13.1 B2O3, 4.1 Na2O, 2.1 Al2O3; Reference: Baak N. T. E. A. and Rapp C. F., GB Patent No. 1132885 Cl C 03 C 3/04, Abridg. Specif., 1968; Assignee: Owens-Illinois, Inc. (US). 1715 1115 Heatcapacity at 20 °C,J/(mol·K) 49 50 50 51 44 52 Surface tension,at ~1300 °C, mJ/m2 315 370 290 Chemical durability,Hydrolytic class,after ISO 719International Organization for Standardization, Procedure 719 (1985) 3 1 3
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