ASTM-D7873 2022

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D7873-22a Standard Test Method for Determination of Oxidation Stability and Insolubles Formation of Inhibited Turbine Oils at 120 °C Without the Inclusion of Water (Dry TOST Method)

Published By	Publication Date	Number of Pages
ASTM	2022	9

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Category: ASTM

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Description

ASTM D7873-22a

Active Standard: Standard Test Method for Determination of Oxidation Stability and Insolubles Formation of Inhibited Turbine Oils at 120 °C Without the Inclusion of Water (Dry TOST Method)

ASTM D7873

Scope

1.1 This test method is used to evaluate the sludging tendencies of steam and gas turbine lubricants during the oxidation process in the presence of oxygen and metal catalyst (copper and iron) at an elevated temperature. This test method may be used to evaluate industrial oils (for example, circulating oils and so forth).

1.2 This test method is a modification of Test Method D4310 where the sludging and corrosion tendencies of the same kinds of oils are determined after 1000 h at 95 °C in the presence of water. Water is omitted in this modification.

1.3 The values stated in SI units are to be regarded as standard.

1.3.1 Exception—The values in parentheses in some of the figures are provided for information only for those using old equipment based on non-SI units.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

antiwear hydraulic oils; circulating oils; copper; corrosion; dry TOST; gas turbine lubricants; hydraulic oils; inhibited mineral oils; insoluble material; metal catalysts; oxidation; RPVOT; sludge; steam turbine lubricants; turbine oils; varnish;

ICS Code

ICS Number Code 75.080 (Petroleum products in general)

DOI: 10.1520/D7873-22A

Additional information

Standard Title	D7873-22a Standard Test Method for Determination of Oxidation Stability and Insolubles Formation of Inhibited Turbine Oils at 120 °C Without the Inclusion of Water (Dry TOST Method)
Published Code	ASTM
Publication Date	2022
Pages Count	9