Product Specification/Models
Niobium Carbide (NbC)
Chemical PCT 
Totol C 11.1 min, Free C 0.15 max
Impurities PCT Max Each
O 0.3, N 0.02, Fe 0.05, Na/K 0.005, Ca/Al/Si 0.01
Size 0.5-4000micron(5-400mesh)