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    Chapter 6 Flow Characteristics and Solidification

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    The flow characteristics required for a petroleum product and the tests used to determine these properties, depend upon the type of product and the service for which it is intended. For liquid products such as lubricating oils and some fuels, viscosity is used to measure flow properties over most of the temperature range; and pour point provides an indication of flow characteristics at low temperatures. For semi-solid products like greases and petrolatums, the consistency is measured by empirical tests for penetration or apparent viscosity. For petroleum waxes, solidification as determined by melting and freezing points and as affected by oil content is important. The variety of the available Standards makes it desirable to discuss them and their significance under the following headings:

    1. Viscosity

    2. Consistency

    3. Solidification

    4. Oil Content of Petroleum Waxes

    Committee/Subcommittee: D02.07

    DOI: 10.1520/STP43645S