

The mass of over
30 different metals and alloys are listed below. While the data is useful
for design, individual samples will differ. Impurities will often have
an influence. A 1000kg of pure water = 1 cubic metre. Pure water was chosen as the 'base line' for specific gravity and given the value of 1. The specific gravity of all other materials are compared to water as a fraction heavier or lighter density. For example, beryllium has a specific gravity (sg) of 1.84 (1840 kg/cu.m) (see table below) As specific gravity is just a comparison, it can be applied across any units. The density of pure water is also 62.4 lbs/cu.ft (pounds per cubic foot) and if we know that a sample of alumimium has a sg of 2.5 then we can calculate that its density is 2.5 x 62.4 = 156 lbs/cu.ft. Note, kg/cu.m divided by 16.02 = lbs/cu.ft 
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We have tried
to be accurate with the above table but cannot be held responsible for
inaccuracies. 