Canada: Fuels: Diesel Fuel
Diesel Fuel Specifications
CGSB requirements for diesel fuel are found in CAN/CGSB-3.517 and summarized in Table 1 [6378]. Two types of diesel fuel are specified, Type A and Type B. Both are suitable for use in high-speed diesel engines for on-road and off-road applications and in some medium speed diesel engines. Type A is intended for use in selected applications or when ambient temperatures require better low-temperature properties than Type B.
Up to 5% biodiesel is allowed in CAN/CGSB-3.517. Biodiesel requirements are covered by CAN/CGSB-3.524 [6267]. Blends from B6 to B20 are covered by CAN/CGSB-3.522 [6266].
| Property | Unit | Properties | Referee Test Method, ASTM |
|---|---|---|---|
| Flash point, min | °C | 40.01 | D93 |
| Water and sediment, max | % vol. | 0.02 | D2709 |
| Distillation T90, max | °C | Type A: 290 Type B: 360 | D86 |
| Kinematic viscosity @ 40°C | mm2/s | Type A: 1.30 - 3.60 Type B: 1.702 - 4.10 | D445 |
| Ash, max | % wt. | 0.010 | D482 |
| Sulfur, max | mg/kg | 15 | D5453 |
| Copper strip corrosion, 3h at 50°C, max | No. 1 | D130 | |
| Cetane number, min | 40.0 | D613 | |
| Electrical conductivity, min | pS/m | 25 | D2624 |
| Low-temperature flow properties | °C | Location & season dependent3 | D5773 or CAN/CGSB-3.0 No. 140.1 |
| Carbon residue on 10% distillation residue, max | % wt. | Type A: 0.1 Type B: 0.2 | D5430 |
| Acid number, max | mg KOH/g | 0.10 | D974 |
| Lubricity, max | µm | 4604 | D6079 |
| Biodiesel, max | % vol. | 5 | |
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1. A higher flash point may be specified for some applications. 2. If the fuel is intended for use at low temperatures, the minimum viscosity limit is lower. For -10°C or colder, the limit is 1.50 mm2/s and for -20°C or colder, 1.30 mm2/s. 3. The operability limit is the 2.5% low-end design temperature for the period and location of intended use and is determined using the most recent set of weather data. When the 2.5% low-end design temperature is colder than -48°C, a fuel meeting a -48°C operability limit may be supplied. Operability temperature is determined by cloud point (referee method ASTM D5773) or the low-temperature flow test (LTFT) (referee method CAN/CGSB-3.0 No. 140.1). 4. A maximum wear scar diameter of 460 µm @ 60°C with ASTM D6079 or D7688 with D6079 being the referee method between these two test methods. Satisfactory performance with several pump rig tests is also an option. | |||
Low temperature properties are based on the 2.5% low-end design temperature. This is the temperature at or below which 2.5% of the hourly outside air temperatures are observed to occur for an indicated half month. The 2.5% low-end design temperature for most weather stations in Canada is based upon a statistical analysis of hourly weather readings over a thirty-year period [6272].