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Fracture Toughness / Fracture Energy Data for Oxide Glass

NIST Standard Reference Database 137


Borate Base Glassess

Reference:

Other material collections: Property Data Summaries

Other materials: Oxide Glasses


Other Borate Glasses materials

B2O3 Base Glasses: B100a

Material Summary:

Molar composition: 100% B2O3

Property Summary:

Special Notes on Properties:
Data Status: Evaluated
Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 57.0   Air          Young's modulus is extrapolated. 
Fracture Energy [J/m2]  ..........: 18.44  Air          Notched beam
Fracture Toughness [MPa m1/2].....:  1.45  Air          Notched beam
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........:      
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....:  0.89  Air          Indentation crack length
Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 17.3   Air              
Fracture Energy [J/m2]  ..........: 26.64  Air          Indentation crack length
Fracture Toughness [MPa m1/2].....:  0.96  Air          Indentation crack length