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ASTM D7038-18
Standard Test Method for Evaluation of Moisture Corrosion Resistance of Automotive Gear Lubricants
28 стр.
Печатное изданиеЭлектронный (pdf)
134.16 $ (включая НДС 20%)
75.100 Lubricants,. Including mineral oils, fluids for metal working and for temporary protection against corrosion / Смазки, индустриальные масла и связанные с ними продукты. Включая минеральные масла, жидкости для обработки металлов и для временной защиты от коррозии
Сборник (ASTM):
05.04 Petroleum Products, Liquid Fuels, and Lubricants (IV): D6973-latest / Нефтепродукты и Смазочные материалы (IV): С D6730 и далее
Значение и использование

5.1 This 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.

5.2 The 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.

Область применения

1.1 Thistest method covers a test procedure for evaluating the rust andcorrosion inhibiting properties of a gear lubricant while subjectedto water contamination and elevated temperature in a bench-mountedhypoid differential housing assembly.2This test method is commonly referred to as the L-33-1 test.

1.2 Thevalues stated in inch-pound units are to be regarded as standard.The values given in parentheses are mathematical conversions to SIunits that are provided for information only and are not consideredstandard.

1.2.1Exceptions—(1) where there isno direct SI equivalent such as screw threads and national pipethreads/diameters, and (2) the values stated in SI units are to beregarded as standard for the definitions in 12.2, and for SI units where there are nodirect inch-pounds equivalent units.

1.3This standard does not purport to address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety,health, and environmental practices and determine the applicabilityof regulatory limitations prior to use.

1.4This international standard was developed in accordance withinternationally recognized principles on standardizationestablished in the Decision on Principles for the Development ofInternational Standards, Guides and Recommendations issued by theWorld Trade Organization Technical Barriers to Trade (TBT)Committee.

Ключевые слова:
corrosion; final drive axle; gear failure; gears; lubricants; L-33-1; moisture; rust;;