At pressurized aircraft cabins, either windscreens and windows are subjected to significant normal loads. Both laminated plate glass or heat-strengthened plate glass can be considered for this kind of application. Laminated plate glass may typically require modulus of elasticity of 70―75 kN/mm2 and bending modulus of rupture of 45 N/mm2, while for heat-strengthened plate glass the modulus of rupture can reach about 200 N/mm2 (*).
(*) H.D Curtis, A. Filippone, M.V. Cook, T.H.G. Megson, M. Tooley BA, D. Wyatt, L.R. Jenkinson, J. Marchman, F. De Florio, J. Watkinson; "Aerospace Engineering Desk Reference", Butterworth-Heinemann (Elsevier), Oxford (UK) and San Diego (USA), 2009, pp. 105-106.