ASTM D665

In many instances, such as in the gears of a steam turbine, water can become mixed with the lubricant, and rusting of ferrous parts can occur. This test indicates how well inhibited mineral oils aid in preventing this type of rusting. This test method is also used for testing hydraulic and circulating oils, including heavier-than-water fluids. It is used for specification of new oils and monitoring of in-service oils.

Note 3—This test method was used as a basis for Test Method D 3603. Test Method D 3603 is used to test the oil on separate horizontal and vertical test rod surfaces, and can provide a more discriminating evaluation.

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).

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

A108 Specification for Steel Bar, Carbon and Alloy, Cold-Finished
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
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
D91 Test Method for Precipitation Number of Lubricating Oils
E1 Specification for ASTM Liquid-in-Glass Thermometers
BS871 Specification for abrasive papers and cloths
BS970 Part 1: Carbon and Carbon Manganese Steels Including Free Cutting Steels
Motor Fuels, Section I, Annex A2, Table32, Reference Materials and Blending Accessories
SAE Standard J405 Chemical Composition of SAE Wrought Stainless Steels
Specifications for IP Standard Reference Liquids, Appendix B
Specifications-IP Standard Thermometers, Vol 2, Appendix A

Index Terms

circulating oils; heavier-than-water fluids; hydraulic oils; inhibited mineral oil; rust-preventing characteristics; steam-turbine oils; ICS Number Code 75.080

Citing ASTM Standards

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