B2O3 Base Glasses: B30a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Borate Glasses

Material Summary:

Molar composition: 30% B2O3 + 35% PbO + 35% ZnO

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 61.0   N2 liquid    
Fracture Energy [J/m2]  ..........:  3.05  N2 liquid    Controlled flaw
Fracture Toughness [MPa m1/2].....:  0.61  N2 liquid    Controlled flaw 

Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 61.0   Air    
Fracture Energy [J/m2]  ..........:  1.17  Air          Controlled flaw
Fracture Toughness [MPa m1/2].....:  0.38  Air          Controlled flaw


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

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