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Rulon Bearings
Corning ULE® 7972 Ultra Low Expansion Glass
Categories: Ceramic; Glass; Optical

Material Notes: ULE® Corning Code 7972 Ultra Low Expansion Glass is a titania silicate glass. It is used in applications ranging from machine tool reference blocks to solid and lightweight mirror blanks for large astronomical telescopes and space satellite applications. The mean linear CTE is 0 ± 30 ppb/°C from 5°C to 35°C with a 95% confidence level, and is tested on each boule.

Excellent resistance to weathering. Exhibits virtually no surface clouding or electrical surface leakage when subjected to attack by water, sulfur dioxide, and other atmospheric gases. High resistance to attack by nearly all chemical agents.

Information provided by Corning Incorporated.

Available Properties
  • Density
  • Hardness, Knoop, kg/mm² at 200g load
  • Tensile Strength, Ultimate
  • Modulus of Elasticity
  • Bulk Modulus
  • Poissons Ratio
  • Shear Modulus
  • Volume Resistivity, 100Hz
  • CTE, linear, Approximate Instantaneous Value
  • CTE, linear, Approximate Instantaneous Value
  • CTE, linear, Approximate Instantaneous Value
  • CTE, linear, Specified mean from 5 to 35°C
  • CTE, linear, Approximate Instantaneous Value
  • CTE, linear, Approximate Instantaneous Value
  • CTE, linear, Approximate Instantaneous Value
  • Specific Heat Capacity
  • Thermal Conductivity
  • Softening Point
  • Annealing Point
  • Strain Point
  • Refractive Index, nC
  • Refractive Index, nD
  • Refractive Index, nF
  • Abbe Number, vd
Property Data

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Manufacturer Notes:
Corning Incorporated

Category Notes

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