This test method details the standard procedure for plotting viscosity-temperature charts that ascertain the kinematic viscosity of a petroleum oil or liquid hydrocarbon at any temperature within a limited range, provided that the kinematic viscosities at two temperatures are known.
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1.1 This practice covers kinematic viscosity-temperature charts (see Figs. 1 and 2), which are a convenient means to ascertain the kinematic viscosity of a petroleum oil or liquid hydrocarbon at any temperature within a limited range, provided that the kinematic viscosities at two temperatures are known.
1.2 The charts are designed to permit petroleum oil kinematic viscosity-temperature data to plot as a straight line. The charts here presented provide a significant improvement in linearity over the charts previously available under Method D341–43. This increases the reliability of extrapolation to higher temperatures.
1.3 The values provided in SI units are to be regarded as standard. The values given in parentheses are provided for information only.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
charts; kinematic viscosity; MacCoull; viscosity; viscosity-temperature charts; Kinematic viscosity; Petroleum products (liquid); Viscosity--petroleum products;
ICS Number Code 75.080 (Petroleum products in general)
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