Boron Carbide
Boron carbide (B4C) is a ceramic material composed of boron and carbon atoms. It is one of the hardest materials known to man, second only to diamond and cubic boron nitride. Boron carbide is often used in structural materials, ceramic materials, chemical raw materials, nuclear properties, electrical properties, etc. due to its advantages such as high melting point, high hardness, low density, stable chemical properties, and neutron absorption. Boron carbide is also used in ballistic armor due to its excellent hardness and ability to absorb and dissipate energy from high-velocity projectiles.
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Particle Size
| Boron carbide particle size sand | F46 F60 F80 F90 F100 F120 F150 F180 F220 |
| Boron carbide fine powder | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 W0.5 |
| Boron carbide segmental sand | 60#-150# |
| Boron carbide micro powder | -325# -200# -100# |
Features
- Exceptional hardness
Boron carbide is one of the hardest known materials, only surpassed by diamond and cubic boron nitride. - High strength and stiffness
Boron carbide possesses impressive mechanical properties, allowing it to withstand extreme forces. - Lightweight
With a low density, boron carbide offers significant weight savings compared to traditional materials. - Excellent wear resistance
Boron carbide’s hardness ensures minimal wear in abrasive applications. - Good chemical resistance
Resistant to most acids and alkalis, boron carbide offers excellent corrosion resistance.
Applications
Parameters
| Parameter | Typical Value(s) |
|---|---|
| Chemical Formula | B4C |
| Crystal Structure | Rhombohedral |
| Density | 2.52 g/cm³ |
| Mohs Hardness | 9.5 |
| Knoop Hardness | 2800-2900 kg/mm² |
| Elastic Modulus | 450-470 GPa |
| Flexural Strength | 350-400 MPa |
| Thermal Conductivity | 30-42 W/mK |
| Coefficient of Thermal Expansion | 4.5-5.0 x 10^(-6) /°C |
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