The values identified below are for dynamic viscosity as measured using centiPoise (cP) and SI units N.s m -2. = Pa. s
1 Centipoise = 1 mPa s (milliPascal Second)= 10 -3 Pa.s
1 Pa.s = 1000 centiPoise
The information has been obtained from reference texts and the internet. A number of values have been obtained using nonograms provided in Perrys and by taking values from graphs of fluid properties. The values are therefore only to be used for initial estimates. Please use quality information sources for detail design work.
It should be noted that the viscosity is not a nice convenient fixed property of a fluid but it is affected very much by the ambient conditions of temperature and pressure and material parameters such and density, and chemical make-up.
1) A table of fluid (gas) viscosities using cP at room temperatures is provided and also a table of Pa.s values at various temperatures is also provided.
2) A table of fluid (liquid viscosities using cP at room temperatures is provided and also a table of Pa.s values at various temperatures is also provided.
Table of dynamic gas viscosity values in cP at room temperatures (20 deg C) and atmospheric pressure
Dynamic viscosities (Pa.s) of various gases at different temperatures at atmospheric pressure
Example value Air (0 deg C) dynamic viscosity = 17 X 10 -6 Pa.s = 0,017 cPoise
Dynamic Viscosities of Various liquids at room Temperature (20 degres C)
Dynamic Viscosities (Pa.s) of Various Liquids at different temperatures