Boron Carbide (B4C) Ceramics
Boron carbide is an extremely hard boron-carbon ceramic. The Mohs hardness of boron carbide is about 9.49, which is the third hardest material after diamond and cubic boron nitride. As of 2015, boron carbide is the third hardest substance known, after diamond and cubic boron nitride, earning it the nickname “black diamond”. As a wear-resistant material, B4C is widely used in industry.
As an abrasive, it is used in powder form for grinding (finishing) metals and ceramics, although its low oxidation temperature of 400-500°C makes it unsuitable for the heat of grinding hardened tool steels. Because of its hardness and very low density, it has been used as a reinforcement for military armor and aluminum in high-performance bicycles, and its wear resistance makes it used in air nozzles and pump seals. The neutron absorber boron carbide is used in powder or solidified form to control the fission rate in nuclear reactors.
Boron carbide ceramic is considered a strong material with
-High hardness
– high cross-section for absorbing neutrons (i.e. good shielding properties against neutrons),
– Stability to ionizing radiation and most chemicals.
-Low thermal conductivity
– Susceptible to thermal shock failure
– extremely brittle
-Semiconductor properties
Boron carbide’s ability to absorb neutrons without forming long-lived radionuclides makes it an attractive material for absorbing neutron radiation produced in nuclear power plants and lethal neutron bombs.
-Nuclear applications of boron carbide include shielding, control rods, and shutdown pellets.
-Abrasives for grinding and ultrasonic cutting
– Antioxidant in carbon-bonded refractory mix
-Consumable parts such as nozzles, drawing dies, powder metal and ceramic forming dies, wire guides

Edgetech Industries, advanced ceramics division is a leading supplier of ceramic materials. We offer boron carbide products in powder and plate form at a competitive price.

Boron Carbide Products