SiO2 Base Glasses: S71b

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Silicate Glasses

Material Summary:

Molar composition: 71.9% SiO2 + 0.581% Al2O3 + 5.28% CaO + 5.88% MgO + 16.2% Na2O

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 73.4   Air
Fracture Energy [J/m2]  ..........:  3.5   Air          Applied moment double cantilever beam
Fracture Toughness [MPa m1/2].....:  0.72  Air          Applied moment double cantilever beam


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Date created: 08 February 2001
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