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Specific gravity for common solids and metals like aluminum, asbestos, brass, calcium and many others. The Specific Gravity - SG - is a dimensionless unit defined as the ratio of density of the material to the density of water at a specified temperature.
- Density
Specific Gravity (Relative Density) - SG - is a...
- Density
Specific gravity (SG), also known as relative density, is a dimensionless quantity that represents the ratio of the density of a substance to the density of a reference substance, typically water for liquids and solids, and air for gases.
Specific gravity (S.G.) is a measure of the relative density of a substance as compared to the density of water at a standard temperature. Physicists use 39.2 F (4 C) as the standard, but engineers ordinarily use 60 F. In the International System of Units (SI Units), the density of water is 1.00 g/cm 3 at the standard temperature.
Water - Properties at Gas-Liquid Equilibrium Conditions. Figures and tables showing how the properties of water changes along the boiling/condensation curve (vapor pressure, density, viscosity, thermal conductivity, specific heat, Prandtl number, thermal diffusivity, entropy and enthalpy).
The density of liquids and solids is usually expressed in g/mL. For example, the density of water at 4 o C is 1.00 g/mL. Objects that are less dense than water float, and the denser objects than water sink in the water. For example, oil is less dense than water and floats on water. Metals are denser than water and sink in water.
The density of water varies with temperature and impurities. Water is the only substance on Earth that exists in all three physical states of matter: solid, liquid and gas. When water freezes it expands rapidly adding about 9 % by volume. Fresh water has a maximum density at around 4° Celsius.
Specific Gravity (Relative Density) - SG - is a dimensionless unit defined as the ratio of the density of a substance to the density of water - at a specified temperature and can be expressed as SG = ρ substance / ρ H2O (2)
