... your application It is also called Amorphous Boron powder, which is in brown to grey/black color ... . Specific gravity : 2.33 -2.45 When Boron powder and non-oxygen acid e.g. HF, HCl,etc. ... to atomic reactor. 2. In metallurgy industry, Boron powder can be smelted with metal to form metal boride at ... electric industry, after being carbonized at 2300, Boron powder can be used as cathode of ignition core in ...