Standard Test Method for Automatic Determination of Low-Temperature Viscosity of Automatic Transmission Fluids, Hydraulic Fluids, and Lubricants Using a Rotational ViscometerName übersetzen
NORM herausgegeben am 1.11.2020
Bezeichnung normen: ASTM D8210-20
Ausgabedatum normen: 1.11.2020
Zahl der Seiten: 11
Gewicht ca.: 33 g (0.07 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
ICS Number Code 75.100 (Lubricants, industrial oils and related products)
|Significance and Use|
5.1The low-temperature, low-shear-rate viscosity of automatic transmission fluids, gear oils, torque and tractor fluids, power steering fluids, and hydraulic oils are of considerable importance to the proper operation of many mechanical devices. Low-temperature viscosity limits of these fluids are often specified to ensure their suitability for use and are cited in many specifications.
5.2The manual test method, Test Method , was developed to determine whether an automatic transmission fluid (ATF) would meet low-temperature performance criterion originally defined using a particular model viscometer.5.3The viscosity determined by this test method using option A was found to be statistically indistinguishable from Test Method 16 measurements based on the ILS data to establish this test methods precision.
5.4Due to the shorter time at test temperature, results from the abbreviated thermal conditioning (Option B) may differ from results obtained with the 14h soak at test temperature (Option A). For the samples used in developing this test method, results obtained with the abbreviated procedure (Option B) tended to be less than 14h soak (Option A). This difference seemed to be larger for products that contained high wax base stock.
1.1This test method automates the determination of low temperature, low-shear-rate viscosity of driveline and hydraulic fluids, such as automatic transmission fluids, gear oils, hydraulic fluids, and other lubricants. It utilizes a thermoelectrically temperature-controlled sample chamber along with a programmable rotational viscometer. This test method covers a viscosity range of 300mPas to 900000mPas measured at temperatures from 40C to 10C.
1.2The precision data were determined at 40C and 26C for a viscosity range of 6380mPas to 255840mPas.
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard except those noted below.
1.3.1ExceptionThe test method uses the SI unit, milliPascal-second (mPas), as the unit of viscosity. (1cP = 1mPas).
1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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