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This specification is prepared based on the former national standard GB 2021-89 and by reference to the American military specification MIL-F-16884H (2)-1985 Fuel, naval distillate.
The main differences with respect to GB 2021-89 Military diesel fuels are as follows: the quality classification is cancelled, and two determination items, namely kinematic viscosity at 40℃ and pour point, and their quality indexes are added.
Specification for military diesel fuels
1 Scope
1.1 Subject content
This specification specifies the technical requirements, quality assurance and delivery preparation of military diesel fuels.
1.2 Application scope
This specification is applicable to straight-run distillate of petroleum, component oil after dewaxing or refining of straight-run distillate of petroleum, and military diesel fuels made via other processing technologies approved by the national competent department of military fuels.
2 Normative references
GB/T 258-77 (88) Determination of acidity of gasoline, kerosene and diesel fuels
GB/T 259-88 Petroleum products - Determination of water-soluble acids and alkalis
GB/T 260-77 (88) Determination of water content in petroleum products
GB/T 261-83 (91) Petroleum products - Determination of flash point - Closed cup method
GB/T 265-88 Petroleum products - Determination of kinematic viscosity and calculation of dynamic viscosity
GB/T 268-87 Petroleum products - Determination of carbon residue - Conradson method
GB/T 380-77 (88) Petroleum products - Determination of sulphur - Lamp method
GB/T 386-91 Diesel fuels - Determination of ignition quality by the cetane method
GB/T 508-85 (91) Petroleum products - Determination of ash
GB/T 509-88 Engine fuels - Determination of existent gum
GB/T 510-83 (91) Petroleum products - Determination of solidification point
GB/T 511-88 Petroleum products and additives - Determination of mechanical impurities - Gravimetric method
GB/T 1884-92 Petroleum and liquid petroleum producte - Determination of density - Hydrometer method
GB/T 1885-83 (91) Petroleum measurement tables
GB/T 3535-83 (91) Petroleum oils - Determination of pour point
GB/T 4756-84 (91) Petroleum and its liquid products - Manual sampling
GB/T 5096-85 (91) Petroleum products - Corrosiveness to copper - Copper strip test
GB/T 6324.4-86 Determination of trace sulphur in products of organic liquid - Micro-coulometry method
GB/T 6536-86 (91) Petroleum products - Determination of distillation
GB/T 6540-86 (91) Petroleum products - Determination of colour
GB/T 7305-87 Petroleum oils and synthetic fluids - Determination of demulsibility characteristics
GB/T 8019-87 Motor gasoline and aviation fuels - Determination of existent gum - Jet evaporation method
GB/T 11139-89 Distillate fuels - Calculation of cetane index
GB/T 11143-89 Inhibited mineral oil test method of rust preventing characteristics in the presence of water
SH/T 0093-91 Determination of solid particle pollutants in jet fuel
SH 0164-92 Petroleum products - Rules in packaging, handling, delivery and acceptance
SH/T 0175-94 Standard test method for oxidation stability of distillate fuel oil (Accelerated method)
SH/T 0179-92 Determination of cloud point and crystallizing point for light petroleum products
3 Requirements
3.1 Qualification appraisal
Products submitted according to this specification shall be qualified ones.
3.2 Material
As for the samples passing the appraisal procedures specified by the state, its raw materials and processing technology shall be used to produce the products of this specification.
3.3 Physical and chemical properties
The physical and chemical properties of products in this specification shall meet the requirements of Table 1, and the following supplementary requirements shall be made.
3.3.1 The -50# military diesel fuels with kinematic viscosity less than 3.0mm2/s at 20℃ may be delivered after negotiation between the supplier and the purchaser.
For -35# and -50# hydrogenated military diesel fuels, the kinematic viscosity shall not be less than 2.3mm2/s.
3.3.2 When the sulphur content of crude oil is greater than 0.5%(m/m), the military diesel fuel is allowed to be delivered with a sulphur content of not greater than 0.3%(m/m).
3.3.3 From May to October, the military diesel fuel is allowed to be delivered according to the trace index in term of water content. Military diesel fuels in refineries south of the Yangtze River (including Hubei province) are allowed to be delivered according to the trace index throughout the year.
Table 1 Physical and chemical properties
Item Quality index
-10# -35# -50#
Appearance Clear and transparent Clear and transparent Clear and transparent
Cetane ≥ 45 40 40
Distillation range
Distilling temperature for 10%, ℃ ≥ - 200 200
Distilling temperature for 50%, ℃ ≤ 280 275 275
Distilling temperature for 90%, ℃ ≤ 335 335 335
Clemulsibility characteristics, min ≤ 10 - -
Flash point (closed), ℃ ≥ 65 50 50
Solidification point, ℃ ≤ -10 -35 -50
Cloud point, ℃ Report Report Report
Pour point, ℃ Report Report Report
Kinematic viscosity, mm2% (20℃) ≥ 3.5 3.5 3.0
(40℃) Report Report Report
Carbon residue, for 10%, % (m/m) ≤ 0.20 0.20 0.20
Ash, % (m/m) ≤ 0.005 0.005 0.005
Sulphur content, % (m/m) ≤ 0.2 0.2 0.2
Corrosiveness to copper (50℃, 3h), grade ≤ 1 1 1
Acidity, mgKOH/l00mL ≤ 5 5 5
Water-soluble acids and alkalis None None None
Chromaticity, No. ≤ 3 3 3
Solid particle pollutants, mg/L ≤ 10 10 10
Oxidation stability, total insoluble substance, mg/100mL Report Report Report
Density (20℃), kg/m3 Report Report Report
Water content None None None
Mechanical impurities None None None
Existent gum ≤ 10 10 10
4 Quality assurance requirements
4.1 Inspection responsibility
The supplier shall conduct all inspections specified in Table 1 of this specification, be responsible for the quality of the delivered products, and ensure to deliver products that fully meet the specification requirements to the purchaser.
4.2 Inspection classification
The inspections of this specification are classified as follows:
a. Appraisal inspection
b. Quality conformance inspection
4.3 Appraisal inspection
See Table 2 for the inspection items of appraisal inspection, and other to-be-evaluated items shall be negotiated by the supplier and the purchaser. Sampling shall be carried out in accordance with GB/T 4756 and the inspection results shall meet the requirements of Table 1.
4.4 Quality conformance inspection
4.4.1 The quality conformance inspection is divided into batch-by-batch inspection and periodical inspection. See Table 3 for inspection items.
