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Schneider Electric- Strategy & Innovation - TSM - Mezzo project - Georges Cornella 1For internal use only

Density

The density represents the weight of a product by unit of volume.

So, the more the density will be low, the more the material will be light.

Density is dependent upon composition and nominal density is determined by computation

rather than by a weight method. These calculated densities are nominal values andshould not be specified as engineering requirements but may be used in calculating

nominal values for weight per unit length, weight per unit area, covering area, etc.

In some cases (for instance, in the United States), density is also defined as its weight per

unit volume; although, this quantity is more properly called specific weight.

In some other cases density is expressed as the dimensionless quantities specific gravity(SG) or relative density (RD), in which case it is expressed in multiples of the density ofsome other standard material, usually water or air/gas. For example, a specific gravity

less than one means that the substance floats in water.