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ASTM D4304 Specification for Mineral and Synthetic Lubricating Oil Used in Steam or Gas Turbines

This specification covers mineral and synthetic (API group I, II, III, or IV) oils used in steam and gas turbine lubrication systems where the performance requirements demand highly refined mineral or synthetic base oils compounded with rust and oxidation inhibitors plus selected additives as needed to control foam, wear, demulsibility, and so forth. This standard may also be applied to “combined cycle” turbine systems, where a single lubricant circulating system is used to supply oil to a steam and gas turbine configured in tandem either on a single or separate shaft for enhanced energy efficiency.

This specification is intended to define the properties of mineral and synthetic oil-based turbine lubricating oils that are functionally interchangeable with existing oils of this type, are compatible with most existing machinery components, and with appropriate field maintenance, will maintain their functional characteristics.

This specification is intended to define only new lubricating oil before it is installed in the machinery.

Savant Labs offer test methods for turbine lubricants including viscosity, oxidation resistance, and wear testing listed under this specification.  The technical team at Savant Labs has a deep understanding of these tests. We can help you define a test slate to meet this specification and analyze the data. Contact us for more information or request a quote for your next turbine lubrication project.

International Methods and Standards

ASTM D92       Flash and Fire Points by Cleveland Open Cup Tester
ASTM D93       Flashpoint by Pensky-Martens Closed Cup Tester
ASTM D97       Pour Point
ASTM D130     Copper Corrosion
ASTM D287    API Gravity of Crude Petroleum/Petroleum
ASTM D445    Viscosity
ASTM D664    Acid Number of Petroleum Products by Potentiometric Titration
ASTM D665    Rust Prevention 
ASTM D892    Foam
ASTM D943    Turbine Oil Oxidation 
ASTM D974    Total Acid Number
ASTM D1401   Water Separability of Petroleum Oils and Synthetic Fluids
ASTM D1500   Color
ASTM D2270  Viscosity Index 
ASTM D2272  Oxidation Stability 
ASTM D3427  Air Release
ASTM D4052  Specific Gravity Report (or Density or API Gravity) by digital density meter
ASTM D4310  Sludging and Corrosion Tendencies 
ASTM D5182  FZG Scuffing Fail Stage
ASTM D6304 Water  by Coulometric Karl Fischer Titration
ISO 4406  Fluid Cleanliness
ISO 6072  Elastomer Compatibility (SRENBR 1 or SRENBR 28P or SRENBR 28PX 168h at 100 °C)