Boron carbide with a low density, a big strength, good stability in high temperature and excellent chemical stability and so on, can be used to make the tank armours, bullet-proof jackets and many industrial fields, whose Mohs hardness is 9.30.
| 碳化硼（B4C）物理性能参数 B4C physical property | ||
| 技术参数Technical Parameter | 单位Unit | 无压烧结碳化硼 B4C |
| 维氏硬度Hardness | GPa | ≥24 |
| 显气孔率Porosity Rate | % | ＜0.2 |
| 体积密度Density | g/cm3 | ＞2.44 |
| 压缩强度Compressive Strength | MPa | 2500 |
| 弯曲强度Flexural Strength | MPa | 480 |
| 热膨胀系数Coefficient of Heat Expansion | 10-6/℃ | 4.0 |
| 导热系数Thermal Conductivity | W/(M·K) | 40 |
| 碳化硼含量Content of B4C | % | ≥90 |
| 弹性模量Elastic Modulus | GPa | 450 |
| 使用温度Useful Temperature | ℃ | 1400 |