BORON CARBIDE
 
Boron Carbide
 
Available in both sintered and reaction-bonded form, boron carbide is the gold standard for lightweight armor plate.  Boron carbide is typically used in body armor and towards aerospace applications.
Sintered boron carbide
Density: 2.44 gm/cc
Compressive strength: 3000 MPa
Hardness: 2650 HV
Fracture toughness: 2.75 MPa√m

Reaction-bonded boron carbide
Density: 2.55 gm/cc
Compressive strength: 2350 MPa
Hardness: 1700 HV
Fracture toughness: 3 MPa√m 

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