ASTM D6547 Standard Test Method for Corrosiveness of Lubricating Fluid to Bimetallic Couple
3. Summary of Test Method
3.1 This test method consists of fitting a brass clip to the fluid-coated surface of a steel disk, storing the assembly at approximately 50 % relative humidity for ten days, and visually inspecting the assembly for evidence of galvanic corrosion.
4. Significance and Use
4.1 Corrosiveness of a fluid to a bimetallic couple is one of the properties used to evaluate hydraulic or lubricating fluids. It is an indicator of the compatibility of a fluid with a brass on steel galvanic couple at ambient temperature and 50 % relative humidity.
