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ASTM D2520 – Standard Test Methods for Complex Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials at Microwave Frequencies and Temperatures to 1650 °C Description: Significance and Use 4.1 Design calculations for such components as transmission lines, antennas, radomes, resonators, phase shifters, etc., require knowledge of values of complex permittivity at operating frequencies. The related microwave measurements …
ASTM D2510 – Standard Test Method for Adhesion of Solid Film Lubricants Description: Significance and Use 5.1 Effective solid film lubricant coatings must adhere to surfaces to provide adequate lubrication in applications with restricted access where fluid lubricants cannot easily be replenished. Loss of coating adhesion results in metal to metal contact causing significant wear of …
ASTM D2509 – Standard Test Method for Measurement of Load-Carrying Capacity of Lubricating Grease (Timken Method) Description: Significance and Use 5.1 The test method is used widely for specification purposes and is used to differentiate between greases having low, medium, or high levels of extreme pressure characteristics. The results may not correlate with results from service. …
ASTM D2505 – Standard Test Method for Ethylene, Other Hydrocarbons, and Carbon Dioxide in High-Purity Ethylene by Gas Chromatography (Withdrawn 2024) Description: Significance and Use 4.1 High-purity ethylene is required as a feedstock for some manufacturing processes, and the presence of trace amounts of carbon dioxide and some hydrocarbons can have deleterious effects. This method is …
ASTM D2503 – Standard Test Method for Relative Molecular Mass (Molecular Weight) of Hydrocarbons by Thermoelectric Measurement of Vapor Pressure (Withdrawn 2022) Description: Significance and Use 3.1 Relative molecular mass (molecular weight) is a fundamental physical constant that can be used in conjunction with other physical properties to characterize pure hydrocarbons and their mixtures. 3.2 A knowledge …
ASTM D2502 – Standard Test Method for Estimation of Mean Relative Molecular Mass of Petroleum Oils from Viscosity Measurements Description: Significance and Use 4.1 This test method provides a means of calculating the mean relative molecular mass of petroleum oils from another physical measurement. 4.2 Mean relative molecular mass is a fundamental physical constant that can be …
ASTM D2501 – Standard Test Method for Calculation of Viscosity-Gravity Constant (VGC) of Petroleum Oils Description: Significance and Use 4.1 The viscosity-gravity constant (VGC) is a useful function for the approximate characterization of the viscous fractions of petroleum.2 It is relatively insensitive to molecular weight and is related to a fluids composition as expressed in terms of …
ASTM D2500 – Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels Description: Significance and Use 5.1 For petroleum products and biodiesel fuels, cloud point of a petroleum product is an index of the lowest temperature of their utility for certain applications. Scope 1.1 This test method covers only petroleum products and biodiesel fuels …
ASTM D2492 – Standard Test Method for Forms of Sulfur in Coal (Withdrawn 2021) Description: Significance and Use 4.1 This test method provides for a separation of coal-associated sulfur into two commonly recognized forms: pyritic and sulfate. Organic sulfur is calculated by difference. Results obtained by the test method are used to serve a number of …
