... to its extreme hardness, it has good wear and abrasive resistance, then it can be used as not only ... high speed steel, but also cutting tools for hard metal; wire drawing dies, abrasive tools with high abrasive and wear resistance, sealed washer ( ... etc, the models and dies of ceramic tools, evaporating boat and parts of precision tools, etc. Chemical DataTotal BoronFree BoronBoron AnhydrideBoron ...