B2O3 Base Glasses: B40d

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Borate Glasses

Material Summary:

Molar composition: 40% B2O3 + 15% PbO + 45% ZnO

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 79.0   N2 liquid     
Fracture Energy [J/m2]  ..........:  3.57  N2 liquid  Controlled flaw
Fracture Toughness [MPa m1/2].....:  0.75  N2 liquid  Controlled flaw 

Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 79.0   Air     
Fracture Energy [J/m2]  ..........:  2.32  Air          Controlled flaw 
Fracture Toughness [MPa m1/2].....:  0.61  Air          Controlled flaw


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

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