About Slag, solid; 1 cubic meter of Slag, solid weighs 2 114 kilograms [kg] 1 cubic foot of Slag, solid weighs pounds [lbs] Slag, solid weighs gram per cubic centimeter or 2 114 kilogram per cubic meter, density of slag, solid is equal to 2 114 kg/m³.In Imperial or US customary measurement system, the density is equal to pound per cubic foot [lb/ft³], .