B2O3 Base Glasses: B80a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Borate Glasses

Material Summary:

Molar composition: 80.7% B2O3 + 19.2% PbO

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....:  0.95  Air          Indentation crack length
                                    0.91  Air          Notched beam  

Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 60.4   Air           
Fracture Energy [J/m2]  ..........:  9.13  Air          Indentation crack length
                                    7.16  Air          Notched beam 
Fracture Toughness [MPa m1/2].....:  1.05  Air          Indentation crack length
                                    0.93  Air          Notched beam


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Date created: 08 February 2001
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