MARINE FUELS

Marine diesel engines are designed to burn a wide range of hydrocarbon fuels ranging from light distillate fuels to residual fuels such as Bunker C or No. 5 Fuel Oil.

Test packages for marine diesel fuels are based on the International Standards Specification ISO 8217. The corresponding ASTM D 2069 Specification was withdrawn in the year 2003. There is a direct correspondence between the two specifications and for each required test.

Gas turbine fuels for marine use are covered by ASTM D 2880 specification (ISO 4261 is equivalent).

The specification ISO 8217 covers a total of nineteen grades of Marine Fuel (Class F) which includes four grades of Marine Distillate Fuel and fifteen grades of Marine Residual Fuel. This classification reflects the wide range of petroleum fuels that are used in marine diesel engines and boilers.

The four distillate grades can generally be classified according to their nominal viscosity as follows:

Grade to Viscosity at 40C, cSt

The residual grades can also be grouped according to their nominal viscosity, measured at 100C, which is shown as the suffix letter in the grade designation.

Maximum Viscosity at 100C, cSt

10
15
25
35
45
55

Grade
RMA-10
RMD-15
RME-25
RMG-35
RMH-45
RMH-55
RMB-10
RMF-25
RMH-35
RMK-45
RML-55
RMC-10
RMK-35
RML-45
RML-35

Our test packages show the recommended tests for qualifying a given fuel grade. Other optional tests are also shown to give a more detailed description of stored fuels when oxidation or contamination may be of special concern.

We are also happy to quote a specific test package to meet your individual needs. Please contact us by phone, e-mail, or fax.