Work Item
ASTM WK70777

New Specification for Polyalkylene Glycol (PAG) Lubricants for Use in Steam and Gas Turbines

1. Scope

The scope of the Committee shall be the promotion of knowledge and the promulgation of standard specifications, classifications, test methods, practices, guides, and terminology in the following technical fields:
Liquid fuels derived from: petroleum or the liquefaction of coal, shale, oil sands, or other naturally occurring materials; liquefied petroleum gas (LPG) and other compressed liquefied fuels; liquid fuels derived from biological materials ('biofuels'); synthesized liquid fuels (also known as renewable or alternative fuels) and oxygenates as fuels or components thereof. Such liquid fuels encompass fuels used for aviation, automotive, burner, diesel, gas turbine, and marine services.
Lubricants derived in whole or in part from petroleum and non-petroleum sources, including synthetics (such as ester lubricating oils), biological, or naturally occurring (mined) materials;
Hydraulic fluids whether derived in whole or in part from petroleum or from other sources;
Liquid hydrocarbons (including liquefied petroleum gas (LPG), and mixtures of hydrocarbons, for chemical and special uses, and fuel products derived therefrom;
Petroleum coke, industrial carbons, and industrial pitches derived in whole or in part from petroleum liquids;
Petrolatum and petroleum waxes;
Additives and other substances which affect the product characteristics of fuels, lubricants, and other products within the scope of the Committee.
Also included within the scope of the Committee shall be the promotion of knowledge and the promulgation of standards on the environmental persistence (biodegradation), ecotoxicity, and bioaccumulation of the products indicated in Section 2.1.
Specifically excluded from the scope of the Committee are standards related to the following technical areas:
Gaseous fuels, including natural gas (including LNG and CNG), hydrogen and manufactured gases such as water gas;
Aromatic and naphthenic hydrocarbons containing six or more carbon atoms, and used in chemical manufacture;
Road and paving materials, bituminous waterproofing and roofing materials;
Paint thinners, solvents;
Electrical insulating materials.
The work of this Committee shall be coordinated with other ASTM International committees and with organizations having mutual interests.


combined cycle polyalkylene glycol turbine lubricant; polyalkylene glycol, polyglycols; PAG; water insoluble PAG; oil soluble PAG; polyalkylene glycol gas turbine lubricants; polyalkylene glycol gas turbine lubricants; turbine lubrication systems; polypropylene glycol; polybutylene glycol; co-polymers of propylene oxide and butylene oxide; alkoxylate; long-chain alcohol


Polyalkylene glycol (PAG) turbine lubricants are currently being used in gas and steam turbine lubricating systems. PAG base stocks are different from mineral oil base stocks in chemical composition as they contain the element oxygen which mineral oils do not. The properties of the fluids then are not identical and may differ slightly or more significantly. Those differences may dictate different specification test limit parameters or different tests or both than those stated currently in ASTM D4304. End users responsible for the selection of a turbine oil for a steam or gas turbine lubricating system need to have a standard specification for PAG turbine lubricants providing property and performance requirements for reference as they currently do for mineral and other synthetic turbine oils.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: D02.C0

Committee: D02

Staff Manager: Alyson Fick

Work Item Status

Date Initiated: 11-21-2019

Technical Contact: John Sherman

Item: 001

Ballot: D02.C0 (21-01)

Status: Will Reballot Item