SiO2 Base Glasses: S68a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Silicate Glasses

Material Summary:

Molar composition: 68.8% SiO2 + 1.78% Al2O3 + 1.74% B2O3 + 5.42% CaO + 0.645% K2O + 6.03% MgO + 14.7% Na2O + 0.793 BaO
Specific Material: R6
Manufacturer: Owens-Illinois

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 19.5   6N NaOH      Dynamic fatigue,surface cond.-abraded
Elastic Modulus [GPa]   ..........: 
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....: 

Crack Growth Exponent []   .......: 13     H2O        Dynamic fatigue,surface cond.-abraded
Elastic Modulus [GPa]   ..........:      
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....: 

Crack Growth Exponent []   .......: 25.1   6N HCl       Dynamic fatigue,surface cond.-abraded
Elastic Modulus [GPa]   ..........:      
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....: 

Crack Growth Exponent []   .......: 19.3   6N NaOH      Dynamic fatigue,surface cond.-acid
                                                       polished
Elastic Modulus [GPa]   ..........:      
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....: 

Crack Growth Exponent []   .......: 16.9   H2O        Dynamic fatigue,surface cond.-acid
                                                       polished
Elastic Modulus [GPa]   ..........:      
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....: 

Crack Growth Exponent []   .......: 17.8   6N HCl       Dynamic fatigue,surface cond.-acid
                                                       polished
Elastic Modulus [GPa]   ..........:      
Fracture Energy [J/m2]  ..........: 
Fracture Toughness [MPa m1/2].....:


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

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