Rust-preventing characteristics of inhibited mineral oil in the presence of water
1. Scope
1.1 This test method covers the evaluation of the ability of inhibited mineral oils, particularly steam-turbine oils, to aid in preventing the rusting of ferrous parts should water become mixed with the oil. This test method is also used for testing other oils, such as hydraulic oils and circulating oils. Provision is made in the procedure for testing heavier-than-water fluids.

NOTE 1 - For synthetic fluids, such as phosphate ester types, the plastic holder and beaker cover should be made of a chemically resistant material, such as polytetrafluoroethylene (PTFE).

1.2 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 6.4-6.6.

2. Referenced Documents
2.1 ASTM Standards:
A108 Specification for Steel Bar, Carbon and Alloy, Cold-Finished
A240/A 240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
D91 Test Method for Precipitation Number of Lubricating Oils
D1193 Specification for Reagent Water
D2422 Classification of Industrial Fluid Lubricants by Viscosity System
D3603 Test Method for Rust-Preventing Characteristics of Steam Turbine Oil in the Presence of Water (Horizontal Disk Method)
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
E1 Specification for ASTM Liquid-in-Glass Thermometers

2.2 Other Documents:
Motor Fuels, Section I, Annex A2, Table 32, Reference Materials and Blending Accessories
Specifications-IP Standard Thermometers, Vol 2, Appendix A
Specifications for IP Standard Reference Liquids, Appendix B
SAE Standard J405 Chemical Composition of SAE Wrought Stainless Steels
BS 871 Specification for abrasive papers and cloths
BS 970 Part 1: Carbon and Carbon Manganese Steels Including Free Cutting Steels