silicon carbide ball sic 65-85%,F.C 4%max,S 0.3% ... %, 75%, 80%, 85%Size: Φ32mm x 50mm, 35mm x 55mm accroding to your requirementTypical properties: our refractory ball is characterised by it's ... electricity, and shorten the operating time.3, Using Silicon carbide ball in manufacturing the manganese steel and the chrome steel may ...