Specific Gravity Table Chart and Equation

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Specific Gravity Table Chart and Equation

Related Resources:

• Specific Gravity of Battery Electrolyte

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/cm³ at the standard temperature. Therefore, the specific gravity (which is dimensionless) for a liquid has the same numerical value as its density in units of g/cm3. Since the density of a fluid varies with temperature, specific gravities must be determined and specified at particular temperatures.

S_g = p_s/p_h20

S_g = Specific Gravity of the substance
p_s = density of the fluid or substance (kg/m³)
p_h20 = density of water, standarized at temperature 4°C (kg/m³)

• Helium gas has a density of 0.164g/liter It is 0.139 times as dense as air .
• Air has a density of 1.18g/l

Specific Gravity Table Chart
Material	Specific Gravity
Acetylene	0.0017
Air, dry	0.0013
Alcohol	0.82
Aluminium	2.7
Aluminum Alloy 356.0	2.68
Aluminum Alloy 360.0	2.68
Aluminum Alloy 364.0	2.63
Ammonia Vapor	0.60
Balsa wood	0.2
Brass	8.48
Cadmium	8.58
Carbon dioxide	0.00198
Carbon monoxide	0.00126
Cast iron	7.20
Chromium	7.03
Copper	8.96
Depleted uranium	19.1
Epoxy	1.8 - 2.0
Ethanol	0.78
Gold	19.3
Hydrogen	0.00009
Iron	7.87
Lead	11.35
Melamine	1.8 - 2.0
Mercury	13.56
Natural Gas	0.59
Nickel	8.72
Nitrogen	0.00125
Nylon	1.12
Oak wood	0.75
Osmium	22.59
Oxygen	0.00143
Methanol Vapor	1.11
Nitrogen Gas	0.07
Paraffin	0.80
Petrol (gasoline)	0.72
Phenolic	1.75 - 1.95
Polyester	1.35 - 2.3
Polyurethane	1.11 - 1.25
Propane Gas	1.55
PVC Pipe	1.36
Rubber	0.96
Steel	7.82
Table salt	2.17
Tin	7.28
Water	1
Water, sea salt	1.02
Zinc	7.12

(Samples may vary, and these figures are approximate.)

• Urine normally has a specific gravity between 1.003 and 1.035.
• Blood normally has a specific gravity of ~1.060.