Vycor® 7913Corning's name brand of 96% silica glass. It is a low expansion, extreme high temperature glass capable of use in operating temperatures of 1700-2200 degrees Fahreheit. It also has excellent transmission in the UV, visible and IR areas of the spectrum.
Vycor glass is formed in rolled sheets or pressings that must be soaked in acid leaching baths to remove the fluxes used in the forming process. The rolled sheets must be ground and polished to use as optical windows. It approximates fused silica (quartz) glasses in many of its properties. Grayglass carries Vycor glass in sheets from 4mm to 19mm thick wih rolled and polished surfaces.
Density 2.18 g/cm3 Young's Modulus 6.75 x 103 kg/mm2 Poisson's Ratio 0.19 Shear Modulus 2.85 x 103 kg/mm2 Knoop Hardness 487 (KHN100)
Softening Pt. 1530ºC Annealing Pt. 1020ºC Strain Pt. 890ºC