Significance and Use
Procedures such as Test Methods D665 and D3603 assess the ability of new or unused hydraulic fluid to prevent rusting on wetted steel surfaces but do not address the prevention of rusting in the vapor space above the fluid. This procedure addresses the latter question under one set of test conditions and need not be applicable to some service conditions. Since used fluids have not been cooperatively tested in this procedure, its utility for in-service monitoring has not been established.
1. Scope
1.1 This test method covers the ability of hydraulic fluids to prevent the rusting of steel in the vapor phase over the hydraulic fluid and water.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.3 WARNINGMercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s websitehttp://www.epa.gov/mercury/faq.htmfor additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.4 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.
2. Referenced Documents (purchase separately) 
The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
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
D91 Test Method for Precipitation Number of Lubricating Oils
D665 Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water
D1193 Specification for Reagent Water
D3603 Test Method for Rust-Preventing Characteristics of Steam Turbine Oil in the Presence of Water (Horizontal Disk Method)
E1 Specification for ASTM Liquid-in-Glass Thermometers
Other Standards
BS970:1955–EN3 Specification for wrought steels
Keywords
hydraulic oil; invert emulsion; rust-preventing characteristics; vapor-phase rust; water-glycol hydraulic fluid;
ICS Code
ICS Number Code 75.120 (Hydraulic fluids)
DOI: 10.1520/D5534-94R11E01
ASTM International is a member of CrossRef.
Citing ASTM Standards
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