Boron Carbide vs. High-silica Glass

Boron carbide belongs to the non-oxide engineering ceramics classification, while high-silica glass belongs to the glass and glass-ceramics. There are 7 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is boron carbide and the bottom bar is high-silica glass.

Boron Carbide (B₄C)High-Silica Glass

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Material Properties

Density, g/cm³		2.1 to 2.7
Density, g/cm³		2.4

Elastic (Young's, Tensile) Modulus, GPa		240 to 460
Elastic (Young's, Tensile) Modulus, GPa		78

Electrical Resistivity Order of Magnitude, 10^x Ω-m		0 to 11
Electrical Resistivity Order of Magnitude, 10^x Ω-m		12

Flexural Strength, MPa		170 to 410
Flexural Strength, MPa		34

Stiffness to Weight: Axial, points		63 to 100
Stiffness to Weight: Axial, points		19

Stiffness to Weight: Bending, points		91 to 100
Stiffness to Weight: Bending, points		61

Thermal Expansion, µm/m-K		4.5 to 5.6
Thermal Expansion, µm/m-K		0.6 to 0.75

Boron Carbide vs. High-silica Glass

Material Properties

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