... can be used as not only lapping and polishing material, such as the polishing of high speed steel, ... synthetic corundum etc. As the raw material for refractory industry, special welding, etc. To be used as raw material for ballistic armour and relative products ... good absorption of neutron.Other using: an indispensable material for making boric metal, for example, titanium boride, boric steel, etc, the ...