Application : 1) abrasive material for led , gemstone etc high hardness products ; 2)refractory additive ; 3) chemical ceramic ; 4) nozzle produce ; 5) war industry for bulletproof products. Specification : Main specifications: B + c 98.59% B 78.30% C 18.53% B2o3 0.31% Free b 0.25% Free c 1.51% Fe 0.25 Hardness knoop (0.1) 4950 kgf/mm2 Hardness mohs 9.5 Specific gravity 2.52 g/cm3 Melting point 2450 ¡ãc Barrel or as customer's requirement.
