SiO2 Base Glasses: S80a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Silicate Glasses

Material Summary:

Molar composition: 80.0% SiO2 + 5.36% CaO + 14.5% Na2O

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 61.9   Air
Fracture Energy [J/m2]  ..........:  5.17  Air          Notched beam,test tech.-introduced a
                                                       sharp crack at the notch
Fracture Toughness [MPa m1/2].....:  0.8   Air          Notched beam,test tech.-introduced a
                                                       sharp crack at the notch


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Date created: 08 February 2001
Last updated: 08 February 2001

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