B2O3 Base Glasses: B83a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Borate Glasses

Material Summary:

Molar composition: 83.7% B2O3 + 16.2% PbO

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 
Fracture Energy [J/m2]  ..........:   
Fracture Toughness [MPa m1/2].....:  1.29  Air          Indentation crack length
                                    1.33  Air          Notched beam

Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 44.5   Air     
Fracture Energy [J/m2]  ..........: 22.02  Air          Indentation crack length
                                   20.48  Air          Notched beam 
Fracture Toughness [MPa m1/2].....:  1.4   Air          Indentation crack length
                                    1.35  Air          Notched beam


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

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