B2O3 Base Glasses: B30b

About Property Data Summaries.

Reference: NBS Technical Note 1212

Other materials: Borate Glasses

Material Summary:

Molar composition: 30% B2O3 + 52.5% PbO + 17.5% Zn

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 52.7   N2 liquid  
Fracture Energy [J/m2]  ..........:  1.82  N2 liquid    Controlled flaw 
Fracture Toughness [MPa m1/2].....:  0.44  N2 liquid    Controlled flaw 

Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 52.7   Air  
Fracture Energy [J/m2]  ..........:  0.78  Air          Controlled flaw 
Fracture Toughness [MPa m1/2].....:  0.29  Air          Controlled flaw


Privacy Statement/Security Notice
Disclaimer | FOIA

NIST is an agency of the
U.S. Commerce Department

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

Technical inquiries:
Ceramics Division
NIST, 100 Bureau Drive, Stop 8520, Gaithersburg, MD 20899-8520.
Phone (301) 975-6119
Fax (301) 975-5334

Ceramics website comments:
Ceramics Webmaster

General NIST inquiries:
Public Inquiries Unit:
Phone (301) 975-NIST (6478)
TTY (301) 975-8295