Cr-sand 46% Cr2O3 for foundry/Casting Cr2O3:46.0%min SiO2:1.0%max FeO:26.5%max CaO:0.30%max MgO:10.0%max Al2O3:15.5%max P:0.003%max S:0.003%max PACKING:1MT big bag SIZES:AFS 25-35 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS50-55 AFS55-60 AFS60-65