504.3-2 SOLVENTS AND CLEANING FLUIDS
- a. Propan-2-ol is flammable.
- (1) 1.1.1 Trichloroethane has been withdrawn from use because of its environmental impact when reacting with ozone. It is also believed to have mutagenic properties.
- (2) Denatured alcohol is both toxic and flammable. It is a mixture containing approximately 95 percent ethyl alcohol, 5 percent methyl alcohol, and minor ingredients such as pyridine.
- (3) Detergent made from biodegradable phosphates sodium sulfate and sodium carboxy methyl cellulose is a conventional laundry substance. Untreated discharge into waterways must be avoided.
2.1 Selecting the Contamination by Fluids Method
After examining requirements documents and applying the tailoring process in Part One of this Standard to determine where exposure to contaminating fluids is foreseen in the life cycle of the test item, use the following to confirm the need for this Method and to place it in sequence with other methods.
2.1.1 Effects of the Contaminating Fluids Environment
2.1.2 Sequence Among Other Methods
- a. General. Use the anticipated life cycle sequence of events as a general sequence guide (see Part One, paragraph 5.5).
- b. Unique to this Method. Do not perform these tests prior to other climatic environmental tests because of potential effect of the contaminants or their removal by decontaminants.
2.2 Difference Between Exposures
This Method has one procedure, three exposures.
- a. Occasional Contamination
- b. Intermittent Contamination
- c. Extended Contamination
2.2.1 Duration of Exposure
22.1.1 Duration of Exposure. There are three options provided in Procedure I; occasional, intermittent, and extended contamination (paragraph 1.1). From the requirements document, determine the option to be used based on the anticipated life cycle scenario, along with the order of application of the test fluids if more than one is required.
2.2.2 Contaminant Fluid Groups
The groups of fluids are listed in Table 504.3-I (see paragraph 6.1, reference s), (see paragraph 6.1, reference t) and described in Annex B. These lists are not all inclusive and allow the addition of other fluids as called out in the test requirements.
MIL-STD-810H
METHOD 504.3
| CHEMICAL¹ | SOURCE DOCUMENT | POSSIBLE USES |
|---|---|---|
| 1. Cleaning compound, solvent (Rifle bore cleaner) | MIL-PRF-372 | Small arms, textiles, general |
| 2. Degreasing Solvent Naphtha or Stoddard, dry cleaning, or D-Limonene solvent | MIL-PRF-680 (NATO #S-752, S-753, S-760) | Small arms, textiles, general, helicopters (parts) |
| 3. Engine oil | MIL-PRF-2104, (NATO #O-1236/15W40), 40, 30 (NATO O-238), 10W, 10W (NATO O-237, SCPL (equipment specific) | Small arms, textiles, general |
| 4. Lubricant, semi-fluid, automatic weapons | MIL-L-46000 (NATO #O-158) | Small arms, textiles, general |
| 5. Lubricating oil, general purpose, preservative (water displacing, low temperature) | MIL-PRF-32033 (NATO #O-190) | Small arms, textiles, general |
| 6. Lubricant, cleaner, and preservative | MIL-L-63460 (CLP), (NATO #S-758) | Small arms, textiles, general |
| 7. Gasoline, commercial, or combat | ASTM D910, Aviation Gasoline; ASTM D4814, Automotive spark ignition engine (Commercial and MOGAS) and others as indicated by test requirements. | Small arms, textiles, general |
| 8. Aviation Turbine fuels, kerosene types | Aviation turbine fuel JP-8 (NATO F-34); NATO Grade F-24, ASTM D1655; Commercial fuel, Jet A, Jet A-1 and others as indicated by test requirements. | Small arms, textiles, general, helicopters (parts) |
| 9. Diesel Fuel, (DL-1, DL-2, other Grades) | A-A-52557, /ASTM D975, (NATO #F-54) | Small arms, textiles, general |
| 10. Insect repellent, personal application | NSN 6840-01-284-3982, Crème, approx 32% Deet | Small arms, textiles, general |
| 11. Dexron III ® | NSN 9150-00-698-2382, Automatic Transmission Fluid, Commercial | Small arms, textiles, general |
| 12. Antifreeze, Multi Engine Type, ethylene (I) or propylene glycol (II) | A-A-52624,/ASTM D6210 Type I, ASTM D6211 Type II) (NATO #S-750) | Small arms, textiles, general |
| 13. Water | Water (distilled). Used as baseline where applicable. | Small arms, textiles, general |
| 14. Simulated sea water or 5% NaCl | ASTM D1141 or ASTM B117 | Small arms, textiles, general |
| 15. Decontaminating agent STB | MIL-DTL-12468 | Small arms, textiles, general |
| 16. Lubricating oil, weapons, low temperature | MIL-PRF-14107 (LAW), (NATO #O-157) | Small arms, textiles, general |
| 17. Hydraulic fluid, synthetic hydrocarbon base, aircraft, missile, & ordnance (OHA), others as indicated by test requirements. | MIL-PRF-87257 (NATO #H-538) or MIL-PRF-83282 (NATO #H-537) | Small arms, textiles, general, helicopters (parts) |
| 18. Hydraulic fluid, rust inhibited, phosphate based synthetic hydrocarbon, fire-resistant | MIL-PRF-46170 (FRH, (NATO #H-544) | Small arms, textiles, general |
| 19. Hydraulic fluid, petroleum based for preservation and operation (OHT) | MIL-PRF-6083, (NATO # C635) | Small arms, textiles, general |
| 20. DS-200 Decontaminating Agent | NSN 6850-01-501-1044, Peroxide based | Small arms, textiles, general |
| 21. Lubricating Oils Synthetic, Aircraft turbine engines, transmissions | MIL-PRF-23699, NATO # O-156; MIL-PRF-7808 (NATO O-152, O-154, O-156, O-167) | Aircraft (parts) |
| 22. De-icers, Anti-Icing | Deicers-Aircraft: Ethylene or propylene glycol mixtures; US antifreeze: AA-52624A (NATO S-750), and others as indicated by test requirements. | Aircraft |
| 23. Silicone based damping fluid (various viscosities, cSts) | Dimethyl silicone (NATO S-1714) |
| CHEMICAL¹ | SOURCE DOCUMENT | POSSIBLE USES |
|---|---|---|
| 24. Aircraft Cleaners, Aerospace, Ground Equipment/Aircraft Interior/Exterior | MIL-PRF 87937, /MIL-PRF-85570, MIL-C-87936, MIL-PRF-85704 or others as indicated | Aircraft (parts) |
| 25. Other Solvents | Denatured or Isopropyl alcohol (2-propanol), acetone, etc. | Small arms, textiles, general, Aircraft (parts) |
| 26. Deicing & antifreeze fluids | Deicers-Aircraft: Ethylene or propylene glycol mixtures; US antifreeze: AA-52624 (NATO S-750), and others as indicated by test requirements. | Aircraft (parts) |
| 27. Runway deicers | Potassium-acetate based solution (i.e., Cryotech E-36 or other as indicated by test requirements). | Aircraft (parts) |
| 28. Insecticides | Insecticides (i.e., Malathion or pyrethrin) as indicated by test requirements). | Aircraft (parts) |
| 29. Disinfectant (Heavy duty phenolics) | Clear, soluble phenolics, e.g., phenol or its derivatives dissolved in a surfactant and diluted with water to give a clear solution; Parachlorometaxylenol (i.e., EcoTru-1453, Aircraft Disinfectant or others as indicated by test requirements. | Aircraft (parts) |
| 30. Coolant dielectric fluid | Polyalphaolefin (PAO) dielectric | Aircraft (parts) |
¹ NOTE: The chemical list shows the more common chemicals used in Military applications and is not all inclusive. Some chemicals may not be readily available and therefore, substitutions may be made through agreement of Test Proponent and the laboratory performing the test. Also, new chemicals may be introduced after publication of this document or are specific to the test item. In this case, these can be added by the Test Proponent
2.2.3 Test Fluid(s)
Select the test fluid(s) from those listed in Tables 504.3-I, (as determined by tailoring procedures), that are representative of those commonly encountered during the life cycle. In the requirements document, list all other fluids identified during the tailoring process as possible contaminants (see 504.3-I, Note 1). Service grades of fluids may be changed or modified with development formulations and materiel demands. Some may subsequently be found undesirable because of environmental or health and safety problems.
2.2.4 Combination of Test Fluids4/
When more than one test fluid is to be applied, consider the following:
- a. the need to assess the effect of the fluids individually, combined, or in succession.
- b. the potential problem of identifying which fluid or combination of fluids affected the test item.
- c. if the order of exposure to fluids in service is known, or if the order of exposure to fluids recognized as having synergistic effects is known and is realistic in service, specify this order.
- d. if there is a requirement to clean the test item between or after tests, or if a new test item is to be used for each test fluid. Do not use a cleaning fluid that results in further contamination. Some of the specified test fluids may be used as cleaning fluids (e.g., aviation fuel, solvents, etc...), otherwise use a fluid known to be used in normal cleaning procedures.
2.2.5 Test Temperature
Unless otherwise required by the customer, this test is performed with both the fluids and the test item at standard ambient conditions. Where appropriate, use temperatures representative of the actual conditions under which fluid contamination can occur, either intentionally or accidentally (see paragraphs 2.2.5.1 – 2.2.5.3). The application of
MIL-STD-810H
METHOD 504.3
contaminating fluids could result in thermal shock as well as contamination effects. Ensure the temperatures used do not exceed the operation/storage temperatures of the test item, therefore incurring possible damage from over temperatures.
2.2.5.1 Test Item Temperature
Unless otherwise required by the customer, the test fluids are stabilized at standard ambient conditions. Where appropriate, use a test item temperature representative of the materiel temperature when exposed to the contaminating fluid. For example, materiel to be de-iced will most likely be at or below freezing; materiel exposed to hydraulic leaks while on the tarmac may have surface temperatures higher than 50 °C (122 °F).
2.2.5.2 Test Fluid Temperature
2.2.5.3 Soak Temperature
If testing at other than standard ambient conditions and in order for contamination effects to mature, a temperature soak of the test item following contamination may be necessary. The temperature of both the contaminating fluid and the materiel will, most likely, change during actual contamination situations. The post-contamination temperature soak will not necessarily reflect the exposure scenario, but rather the worst-case effect(s) on the materiel. Accordingly, for the soak temperature, use the materiel's maximum life cycle temperature for the anticipated exposure situation.
2.2.6 Fluid Exposure Duration
- a. Occasional Exposure. Item is exposed to chemical for 5 to 10 minutes. If other than standard ambient temperature is used for the item temperature, maintain this temperature for 8 hours and then bring the item to standard ambient temperature.
- b. Intermittent Exposure. Item is exposed to chemical for 8 hours continuous contact and then left to air dry for 16 +1 hr at standard ambient conditions.
- c. Extended Contamination. Item is exposed to chemical for at least 24 hours (unless otherwise specified in test document) continuous contact. If other than standard ambient temperature is used for the item temperature, maintain this temperature for 8 hours and then bring the item to standard ambient temperature.
2.2.7 Methods of Application
The solutions/chemicals can be applied by immersing, spraying, brushing, or as stated in the test requirements.