Boron Carbide for Ceramic

Boron Carbide, or B4C, is an extremely hard ceramic material discovered in 1899. With a Mohs hardness between 9 and 10, boron carbide is one of the hardest synthetic substances known, exceeded only by cubic boron nitride (CBN) and diamond. Besides, it has good chemical inertness and a high neutron absorption cross-section. Thus, it is a suitable material for many high-performance applications, such as anti-oxidant in carbon-bonded refractory mixes, reactor control rods, and neutron-absorbing shielding in nuclear applications.

$15.00$35.00 / KG

Boron Carbide Ceramics Properties

  • Low thermal conductivity
  • Susceptible to thermal shock failure
  • Outstanding hardness
  • Extremely brittle
  • Semiconductor
  • Good thermal-neutron capture

Boron Carbide Powder Properties (Theoretical)

Compound FormulaCB4
Molecular Weight55.26
AppearanceGray/black solid
Melting PointN/A
Boiling PointN/A
Density2.1 to 2.7 g/cm3
Solubility in H2ON/A
Electrical Resistivity0 to 11 10x Ω-m
Poisson’s Ratio0.17-0.18
Specific Heat950 J/kg-K
Tensile Strength350 MPa (Ultimate)
Thermal Conductivity31 to 90 W/m-K
Thermal Expansion4.5 to 5.6 µm/m-K
Vickers Hardness26 MPa
Young’s Modulus240 to 460 GPa
Exact Mass56.037222
Monoisotopic Mass56.037222
Weight1000 kg
Dimensions100 × 100 × 100 cm


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