The density of B4C was smaller, 2.52g/cm3.In the homogeneous phase region, the relationship between density and carbon content can be expressed by an empirical formula (9 can be expressed as:

(9) = 2.4224 + 0.00489 C %

Due to the low density of boron carbide, in the case of higher density, its performance can reach the standard high strength, high hardness and other excellent properties of boron carbide

Therefore, it can be used as light armor to reduce the weight of tanks and other vehicles and save energy.