Skip navigation Accessibility information

Boron Carbide - Hot-pressed ( B4C )

Material Information

Buy Boron Carbide - Hot-pressed on-line

We stock and supply the following standard forms:
Rod Sheet Sputtering Target
Rod Sheet Sputtering Target

Choose a form to search our on-line catalogue  
General Description:  

After Diamond, Cubic Boron Nitride and Boron Oxide, Hot pressed Boron Carbide has the highest hardness known. Its main applications make use of its excellent wear resistance and high strength. It has a low density but a high elastic modulus and high compressive strength, which leads to its use as a ballistic material. 20% of natural boron is the €OB isotope, giving Boron Carbide a high neutron capture cross section. It is therefore used in neutron-absorbing applications, such as shielding. Boron carbide has good resistance to acids but not to alkali hydroxide melts.

   

Chemical Resistance

Acids - concentrated Fair
Acids - dilute Good
Alkalis Fair
Halogens Fair
Metals Fair

Electrical Properties

Volume resistivity @25C ( Ohmcm ) 0.1-10

Mechanical Properties

Compressive strength ( MPa ) 1400-3400
Hardness - Knoop ( kgf mm-2 ) 2800-3500
Hardness - Vickers ( kgf mm-2 ) 3200
Tensile modulus ( GPa ) 440-470

Physical Properties

Apparent porosity ( % ) <3
Density ( g cm-3 ) 2.45-2.52

Thermal Properties

Coefficient of thermal expansion @20-1000C ( x10-6 K-1 ) 5.6
Melting point ( C ) 2450
Specific heat @25C ( J K-1 kg-1 ) 950
Thermal conductivity @20C ( W m-1 K-1 ) 30-90
Upper continuous use temperature ( C ) 600-800

Buy Boron Carbide - Hot-pressed on-line

We stock and supply the following standard forms:
Rod Sheet Sputtering Target
Rod Sheet Sputtering Target

Choose a form to search our on-line catalogue  

Index