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Tungsten Carbide vs. Machinable Glass-ceramic

Tungsten carbide belongs to the non-oxide engineering ceramics classification, while machinable glass-ceramic belongs to the glass and glass-ceramics. There are 19 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is tungsten carbide and the bottom bar is machinable glass-ceramic.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 4780
310
Elastic (Young's, Tensile) Modulus, GPa 630
67
Flexural Strength, MPa 1830
96
Fracture Toughness, MPa-m1/2 12
2.5
Knoop Hardness 1670
250
Poisson's Ratio 0.24
0.29
Tensile Strength: Ultimate (UTS), MPa 350
84

Thermal Properties

Maximum Temperature: Mechanical, °C 1000
760
Specific Heat Capacity, J/kg-K 280
790
Thermal Conductivity, W/m-K 85
1.2
Thermal Expansion, µm/m-K 5.4
21

Electrical Properties

Electrical Resistivity Order of Magnitude, 10x Ω-m 0.75
14

Otherwise Unclassified Properties

Density, g/cm3 15
2.7

Common Calculations

Stiffness to Weight: Axial, points 24
14
Stiffness to Weight: Bending, points 20
51
Strength to Weight: Axial, points 6.6
8.8
Strength to Weight: Bending, points 7.5
16
Thermal Diffusivity, mm2/s 21
0.56
Thermal Shock Resistance, points 7.2
4.3