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Class 4 Tungsten vs. Graphite

Class 4 tungsten and graphite belong to fundamentally different material chemistries. Class 4 tungsten is a metal, while graphite is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (20, 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 class 4 tungsten and the bottom bar is graphite.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 16
1.8
Elastic (Young's, Tensile) Modulus, GPa 270
21
Stiffness to Weight: Axial, points 9.6
6.7
Stiffness to Weight: Bending, points 14
53
Strength to Weight: Axial, points 14
2.9
Strength to Weight: Bending, points 12
8.7
Tensile Strength: Ultimate (UTS), MPa 790
18
Thermal Conductivity, W/m-K 30
6.0
Thermal Expansion, µm/m-K 4.5
4.9
Thermal Shock Resistance, points 46
12