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What are the properties of Borosilicate Glass?
What are the properties of Borosilicate Glass?
Metric US Coefficient of mean linear thermal 3.3 · 10-6 K-1 3.3 · 10-6 K-1 expansion a acc. to DIN ISO 7991 (20 °C; 300 °C) (68 °F; 572 °F) Transformation temperature Tg 525 °C 977 °F Density r at 25 °C 2.23 g · cm-3 139.2 lb · ft-3 Modulus of elasticity E (Young’s modulus) 63 · 103 N · mm-2 91 · 105 lb · in-2 (psi) Poisson’s ratio m 0.20 0.20 Thermal conductivity lw at 90 °C 1.2 W · m-1 · K-1 0.69 Btu · hr -1 · ft-1 · °F-1 Refractive index (l = 587.6 nm) nd 1.473 1.473 Stress-optical coefficient (DIN 52 314) K 4.0 · 10-6 mm2 · N -1 4.0 · 10-6 mm2 · N-1 Chemical Composition SiO2 B2O3 Na2O +K2O Al2O3 81 13 4 2 Chemical Resistance Hydrolytic Class (DIN ISO 719) HGB 1 Acid Class (DIN 12116) Class S 1 Alkali Class (DIN ISO 695) Class A 2 Just tell me what you want, a customized product is welcome!
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