ASTM D6821-12
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Standard Test Method for Low Temperature Viscosity of Drive Line Lubricants in a Constant Shear Stress Viscometer
ASTM International , 11/01/2012
Pages: 6
1.1This test method covers the measurement of the viscosity of drive line lubricants (gear oils, automatic transmission fluids, and so forth) with a constant shear stress viscometer at temperatures from -40 to 10°C after a prescribed preheat and controlled cooling to the final test temperature. The precision is stated for test temperatures from -40 to -26°C.
1.2The applicability of this particular test method to petroleum products other than drive line lubricants has not been determined.
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1This standard uses the SI based unit of milliPascal second (mPa·s) for viscosity which is equivalent to centiPoise (cP).
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 and health practices and determine the applicability of regulatory limitations prior to use.
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