... Silicon carbide sand and powder for deoxidization of steelmaking in specification of 50, 60, 70, 80 and 90 can be customized.Features: Black silicon carbide ... grinding of electronics, refractory, special ceramics, foam ceramics, modification of coating and plastics, auto parts, war industry and aviation, steelmaking, etc.Black silicon carbide ... elements and thermal elements. Black/Green Silicon Carbide