SiO2 Base Glasses: S97a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Silicate Glasses

Material Summary:

Molar composition: 97.1% SiO2 + 0.179% Al2O3 + 2.62% B2O3
Specific Material: 7900
Manufacturer: Corning Glass

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........:  
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....:  0.7   Vacuum       Double cantilever beam
                                    0.71  Vacuum       Notched beam 

Crack Growth Exponent []   .......: 50.5   Air,100 % RH Double cantilever beam
Elastic Modulus [GPa]   ..........:     
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....:


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Date created: 08 February 2001
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