ISO SPECIFICATIONS
ISO’s work in this area has led to improved quality of marine fuels and greater confidence and transparency between buyers and suppliers in the global market for marine fuels which is, in turn, a significant factor in maritime transport and global supply chains.
ISO 8217:2010 specifies the requirements for petroleum fuels for use in marine diesel engines and boilers, prior to appropriate treatment before use
Marine Distillate Fuels as per ISO 8217:2010
| Characteristics | Unit | Limit | DMX | DMA | DMZ | DMB |
|---|---|---|---|---|---|---|
| Viscosity at 40°C | mm2/s | max. | 5.500 | 6.000 | 6.000 | 11.00 |
| Viscosity at 40°C | mm2/s | min. | 1.400 | 2.000 | 3.000 | 2.000 |
| Density at 15°C | kg/m3 | max. | – | 890.0 | 890.0 | 900.0 |
| Cetane Index | min. | 45 | 40 | 40 | 35 | |
| Sulfur | mass % | max. | 1.00 | 1.50 | 1.50 | 2.00 |
| Flash point | °C | min. | 43.0 | 60.0 | ||
| Hydrogen sulfide | mg/kg | max. | 2.00 | |||
| Acid Number | mgKOH/g | max. | 0.50 | |||
| Oxidation stability | g/m3 | max. | 25 | |||
| Total sediment by hot filtration | mass % | max. | – | – | – | 0.10 |
| Micro Carbon Residue at 10% Residue | mass % | max. | 0.30 | 0.30 | 0.30 | – |
| Micro Carbon Residue | mass % | max. | – | – | – | 0.30 |
| Pour point, Summer | °C | max. | 0 | 0 | 0 | 6 |
| Pour point, Winter | °C | max. | -6 | -6 | -6 | 0 |
| Cloud point | °C | max. | -16 | – | – | – |
| Water | volume % | max. | – | – | – | 0.30 |
| Ash | mass % | max. | 0.010 | |||
| Lubricity, corrected wear scar diameter (wsd 1.4) at 60°C | µm | max. | 520 | |||
| Appearance | – | – | clear & bright | – | ||
Marine Residual Fuels as per ISO 8217:2010
| RMA | RMB | RMB | RME | RMG | RMK | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Characteristics | Unit | Limit | 10 | 30 | 80 | 180 | 180 | 380 | 500 | 700 | 380 | 500 | 700 |
| Viscosity at 50°C | mm2/s | max. | 10.00 | 30.00 | 80.00 | 180.0 | 180.0 | 380.0 | 500.0 | 700.0 | 380.0 | 500.0 | 700.0 |
| Density at 15°C | kg/m3 | max. | 920.0 | 960.0 | 975.0 | 991.0 | 991.0 | 1010.0 | |||||
| CCAI | – | max. | 850 | 860 | 870 | ||||||||
| Sulfur | mass % | max. | Statutory requirements | ||||||||||
| Flash point | °C | min. | 60.0 | ||||||||||
| Hydrogen sulphide d | mg/kg | max. | 2.00 | ||||||||||
| Acid Number | mgKOH/g | max. | 2.5 | ||||||||||
| Micro Carbon Residue | mass % | max. | 2.50 | 10.00 | 14.00 | 15.00 | 18.00 | 20.00 | |||||
| Aluminium + Silicon | mg/kg | max. | 25 | 40 | 50 | 60 | |||||||
| Sodium | mg/kg | max. | 50 | 100 | 50 | 100 | |||||||
| Vanadium | mg/kg | max. | 50 | 150 | 350 | 450 | |||||||
| Ash | mass % | max. | 0.040 | 0.070 | 0.100 | 0.150 | |||||||
| Pour point (upper), Summer | °C | max. | 6 | 30 | |||||||||
| Pour point (upper), Winter | °C | max. | 0 | 30 | |||||||||
| Water | vol. % | max. | 0.30 | 0.50 | |||||||||
| Total Sediment, aged | mass % | max. | 0.10 | ||||||||||
| Used lubricating oils (ULO): Calcium and Zinc; or Calcium and Phosphorus | mg/kg | – | The fuel shall be free from ULO, and shall be considered to contain ULO when either one of the following conditions is met: Calcium > 30 and zinc >15; or Calcium > 30 and phosphorus > 15. | ||||||||||