Significance and Use
Horizontal metal surfaces, on which water droplets tend to be retained, are more prone to rusting and corrosion than vertical or sloping surfaces. This test method is therefore more discriminating than Test Method D 665 (Procedure A), since it gives a separate evaluation of the oil on a horizontal and a vertical surface. The test method indicates the ability of oils to prevent rusting and corrosion of all ferrous surfaces in steam turbines under full flow and quasi-static conditions. It is used for specification of new oils.
1.1 This test method covers the ability of steam-turbine oils to prevent the rusting of horizontal and vertical ferrous surfaces when water becomes mixed with the oil.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
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
E1 Specification for ASTM Liquid-in-Glass Thermometers
BS871:1981 Specification for abrasive papers and cloths
horizontal disk method; rust-preventing characteristics; steam-turbine oils;
ICS Number Code 75.100 (Lubricants, industrial oils and related products)
ASTM International is a member of CrossRef.
Citing ASTM Standards
[Back to Top]