Because we do not have the time to give each enquiry an individual reply, we have provided this page for your information. Density and Specific Gravity For most practical purposes, density and specific gravity are the same, however there are slight differences between them, as most scientists would appreciate. Density Density is defined as the ratio of the mass of an object to its volume. The figure quoted is often the same as that for specific gravity . Specific gravity is not expressed in units as it is purely a ratio.
All figures quoted are approximate.
Please note that actual densities may vary according to the exact physical state of the metal, as cast, rolled, drawn, because of varying degrees of porosity, and its temperature. Alloys will vary considerably according to the other components they contain. A cubic centimetre of gold will weighs 19.3 grams. A cubic meter of gold will weighs 19.3 tonnes.