B2O3 Base Glasses: B85a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Borate Glasses

Material Summary:

Molar composition: 85.9% B2O3 + 14.0% PbO

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....:  1.39  Air          Indentation crack length
                                    1.38  Air          Notched beam

Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 36.2   Air               
Fracture Energy [J/m2]  ..........: 31.91  Air          Indentation crack length
                                   25.92  Air          Notched beam 
Fracture Toughness [MPa m1/2].....:  1.52  Air          Indentation crack length
                                    1.37  Air          Notched beam


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

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