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|Density of Gold & Other Metals|
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 is defined as the ratio of the mass of an object to its volume.
Density should correctly be expressed in units of "unit mass per unit volume", e.g. grams per cubic centimetre. The figure quoted is often the same as that for specific gravity. For those who are unsure what "mass" means, consider it to be the same as "weight", you will not be far out.
For the benefit of Nottingham University students, please note that the figure for S.G. is the same as the figures in grams per cubic centimetre = tonnes per cubic metre = S.I. units.
Specific gravity is defined in Webster's dictionary as the ratio of the weight or mass of a given volume of a substance to that of another substance (usually water for solids and liquids) used as a standard.
Specific gravity is not expressed in units as it is purely a ratio.
Specific Gravity Table
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.
|9ct||10.9 to 12.7|
|14ct||12.9 to 14.6|
|18ct Yellow||15.2 to 15.9|
|18ct White||14.7 to 16.9|
|22ct||17.7 to 17.8|
|Sterling Silver||10.2 to 10.3|
Other Facts about Gold Weight
It follows from the above table that:-
We hope this helps!
You may wish to visit some of our other pages:-
Gold Alloys by Volume
Allergies to Gold Jewellery
Hardness & Durability of Gold Alloys
What is White Gold?
White Gold Turns Yellow
Gold Alloys - What Is A Carat?
Our thanks to Dr. Alastair Brown who spotted that we had given the units/no units information the wrong way round, and kindly e-mailed, to allow us to correct the error. (We owe you a beer, Dr. A.)
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