P2O5 Base Glasses: P70a

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Phosphate Glasses

Material Summary:

Molar composition: 70.6% P2O5 + 9.4% Al2O3 + 14.1% K2O + 1.6% La2O3) + 4.2% Nd2O3

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 56.8   Heptane      
Fracture Energy [J/m2]  ..........:  1.27  Heptane      Indentation crack length
Fracture Toughness [MPa m1/2].....:  0.38  Heptane      Indentation crack length


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Date created: 08 February 2001
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