Does not react with acid or alkali solution, has high chemical potential, neutron absorption, wear resistance and semiconductor conductivity.It is one of the most stable substances for acids and is stable in all concentrated or dilute acid or alkali solutions.Carbon trioxide and boron trioxide can be completely decomposed after being treated with a mixture of sulfuric acid and hydrofluoric acid and calcined in air at 800℃ for 21h.

When some transition metals coexist with their carbides, they have special stability.

In 1000 ~ 1100 ℃ under the condition of the periodic table of the first Ⅳ, Ⅴ and Ⅵ transition metal and strong reaction to form metal boride boron carbide powder.