Standard Test Method for Oxidation Induction Time of Lubricating Greases by Pressure Differential Scanning Calorimetry
Standard Test Method for Oxidation Induction Time of Lubricating Greases by Pressure Differential Scanning Calorimetry
SIGNIFICANCE AND USE 5.1 Oxidation induction time, as determined under the conditions of this test method, can be used as an indication of oxidation stability.3 This test method can be used for research and development, quality control and specification purposes. However, no correlation has been determined between the results of this test method and service performance. SCOPE 1.1 This test method covers the determination of oxidation induction time of lubricating greases subjected to oxygen at 3.5 MPa (500 psig) and temperatures between 155 °C and 210 °C. 1.2 Warning—The original data published in Research Report RR:D02-1314, was not analyzed in accordance the current D2PP. It also used instruments which are no longer manufactured and in a check of currently used instruments, none of the original instruments were still in use. The new precision of this test method is still to be established. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.4 This 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. 1.5 This 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.
ASTM D5483-21 is the standard test method developed by ASTM International for determining the oxidation induction time (OIT) of lubricating greases using pressure differential scanning calorimetry (PDSC). This method measures how long a grease sample can withstand oxidative degradation when exposed to high-pressure oxygen at elevated temperatures. The results from this standardized procedure provide valuable insights into the oxidation stability of lubricating greases, supporting research and development, quality control, and specification activities in the lubricants industry.
Другие стандарты ASTM
Adherence to ASTM D5483-21 ensures consistent, repeatable results for evaluating the oxidation resistance of lubricating greases. Using pressure differential scanning calorimetry, manufacturers and laboratories can effectively screen, benchmark, and control the performance of greases intended for high-temperature or long-duration service. The standard underpins technical specifications and procurement decisions across the lubrication, automotive, industrial, and manufacturing sectors.
Keywords: ASTM D5483, oxidation induction time, lubricating grease, PDSC, oxidation stability, differential scanning calorimetry, quality control, lubricant testing, grease performance, international standards.