Brosilicate Glass Properties

  Metric US
Coefficient of mean linear thermal expansion α acc. to DIN ISO 7991 3.3 * 10-6 K-1
(20°C; 300°C)
3.3 * 10-6 K-1
(68°F; 572°F)
Transformation temperature Tg 525°C 977°F
Density ρ at 25°C 2.23g*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 µ 0.20 0.20
Thermal conductivity λw at 90°C 1.2 W * m-1 * K-1 0.69 Btu * hr-1 * ft-1 * °F-1
Refractive index (λ = 587.6nm) 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

See also

SCHOTT uses Cookies on this Website to enhance the user experience and provide the best possible Service. By continuing to browse the Website, you consent to our use of Cookies.