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Standard Test Method for Evaluation of Moisture Corrosion Resistance of Automotive Gear Lubricants (Includes all amendments and changes 7/7/2022).Přeložit název
NORMA vydána dne 1.7.2022
Označení normy: ASTM D7038-22a
Datum vydání normy: 1.7.2022
Kód zboží: NS-1066790
Počet stran: 26
Přibližná hmotnost: 78 g (0.17 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
corrosion, final drive axle, gear failure, gears, lubricants, L-33-1, moisture, rust,, ICS Number Code 75.100 (Lubricants, industrial oils and related products)
|Significance and Use|
5.1This test simulates a type of severe field service in which corrosion-promoting moisture in the form of condensed water vapor accumulates in the axle assembly. This may happen as a result of volume expansion and contraction of the axle lubricant and the accompanied breathing in of moisture-laden air through the axle vent. The test screens lubricants for their ability to prevent the expected corrosion.
5.2The L-33-1 test procedure is used or referred to in the following documents: ASTM Publication STP-512A,6 SAE J308, SAE J2360, and U.S. Military Specification MIL-PRF-2105E.
1.1This test method covers a test procedure for evaluating the rust and corrosion inhibiting properties of a gear lubricant while subjected to water contamination and elevated temperature in a bench-mounted hypoid differential housing assembly.2 This test method is commonly referred to as the L-33-1 test.
1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.2.1Exceptions(1) where there is no direct SI equivalent such as screw threads and national pipe threads/diameters, and (2) the values stated in SI units are to be regarded as standard for the definitions in 12.2, and for SI units where there are no direct inch-pounds equivalent units.
1.3This 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.
1.4This 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.
|2. Referenced Documents|
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