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AWS BCo-1 vs. Carbon-carbon

AWS BCo-1 and carbon-carbon belong to fundamentally different material chemistries. AWS BCo-1 is a metal, while carbon-carbon is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (15, 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 AWS BCo-1 and the bottom bar is carbon-carbon.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
95
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 78
36
Tensile Strength: Ultimate (UTS), MPa 700
19

Thermal Properties

Specific Heat Capacity, J/kg-K 480
760
Thermal Expansion, µm/m-K 12
4.0

Otherwise Unclassified Properties

Density, g/cm3 8.1
1.7

Common Calculations

Stiffness to Weight: Axial, points 14
31
Stiffness to Weight: Bending, points 24
89
Strength to Weight: Axial, points 24
3.0
Strength to Weight: Bending, points 22
9.1
Thermal Shock Resistance, points 21
3.5