Oxidation Induction Time of Lubricating Greases by ASTM D5483 Differential Pressure Scanning Calorimeter

EUROLAB laboratory provides testing and compliance services within the scope of ASTM D5483 standard. Some greases or oils react with atmospheric oxygen to produce insoluble gums and sludges that can reduce lubricant performance.

Antioxidants are added to reduce the oxidation rate. This test can be used to compare antioxidants and can predict the relative life of a lubricant. It requires a small amount of sample and produces results in hours rather than days, weeks or even months as other tests require.

A small amount of grease (ASTM D5483) or oil (ASTM D6186) is heated to a certain temperature and then pressurized with oxygen. Pressure and temperature are maintained until an exothermic reaction occurs, up to 120 minutes.

If the reaction takes less than ten minutes, a lower temperature is tested according to the method (210ºC, 180ºC, 155ºC for grease and 210ºC, 180ºC, 155ºC, 130ºC for oil).

Values ​​stated in SI units should be accepted as standard. Values ​​in parentheses are for informational purposes only.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.

EUROLAB assists manufacturers with ASTM D5483 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.