... Celsius or above, featured by high hardness, small coefficient of expansion, brittle property and good thermal conductivity, widely ... as a deoxidant in abrasives, grinding of electronics, refractory, special ceramics, foam ceramics, modification of coating and plastics, auto parts, ... Note: Silicon carbide sand and powder for deoxidization of steelmaking in specification of 50, 60, 70, 80 and 90 can ...