ASTM D6203 Standard Test Method for Thermal Stability of Way Lubricants
3. Summary of Test Method
3.1 A beaker containing test oil and copper and steel rods is placed in a gravity convection electric oven for 24 h at a test temperature of 100°C. At the completion of the test, the copper and steel rods are visually rated for discoloration and the beaker is visually evaluated for deposits.
4. Significance and Use
4.1 Thermal stability characterizes physical and chemical property changes which may adversely affect an oil's lubricating performance. This test method evaluates the thermal stability of a way lubricant in the presence of copper and steel rods at 100°C. Deposits and rod colors are the evaluation criteria. No correlation of the test to field service has been made.
4.2 This test method is intended for use in qualifying a way lubricant, rather than for quality control or condition monitoring purposes.
