The specific gravity of lead is 11.35. Lead ore has a specific gravity between 7.3 and 7.6, and the specific gravity of yellow lead oxide ranges from 9.5 to 9.9.
Specific gravity, or relative density, is a ratio that compares the density of a material to the density of water. Density is a measurement found by dividing the mass of a substance by the volume of the substance.
Specific gravity is usually measured at 39 degrees Fahrenheit. At this temperature, the density of water is at its highest at 8.35 pounds per gallon, and the specific gravity for water is 1.0.