Fracture Toughness / Fracture Energy Data for Ceramics

NIST Standard Reference Database 138

Last Update to Data Content: 1998



Reference: NIST Structural Ceramics Database

Other material collections: Property Data Summaries

Other Toughness materials

Tungsten Carbide ( WC )

Material Summary:

                      [Ref. 1,a]             [Ref. 1,a]
Manufacturer........: Ugine Carbone, Inc.    Ugine Carbone, Inc.
Material Designation: tungsten carbide       tungsten carbide
Material Form.......: Polycrystal            Polycrystal
Composition.........: WC                     WC
  (mass fraction)     0.5% Co


[1] J. L. Chermant, A. Deschanvres and F. Osterstock, "Toughness and Fractography of TiC and WC" Fracture Mechanics of Ceramics, Vol. 4, pp. 891-901 (1978).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
  6                     8.9           90         SENB          air       Ref. 1,a; technique used a starter
                                                                                   crack, E = 680 GPa
  6                     7.5           80         SENB                    Ref. 1,b; technique used a starter
                                                                                   crack, E = 700 GPa