... 52g/cm3, smelting point, 2450Centigrade.For its good properties and characters,it has wide applicationDue to its extreme hardness, ... hard metal; wire drawing dies, abrasive tools with high abrasive and wear resistance, sealed washer (gasket), and the nozzles for water ... boride, boric steel, etc, the models and dies of ceramic tools, evaporating boat and parts of precision tools, etc. Chemical DataTotal ...