MIL-PRF-6085E
TABLE III. Test methods for oil properties.
CHARACTERISTIC
ASTM TEST METHODS
1/
D4636
Corrosion and oxidation stability
D97
Pour point
D92
Flash point (open cup method)
D91
Precipitation number
D445
Viscosity (kinematic)
D1500
Color
D972
Evaporation loss of lubricating greases and oils
D974
Acid number
Note:
1/
o
Test shall be run for 168 hours at 121 C. Use hexane, heptane, and/or acetone to clean coupons.
Use Alternate Procedure 2.
4.4.3 Examination of filled container. Each sample of the filled unit container and the shipping
container shall be examined for evidence of leakage and net content, and examined for construction
defects in the container and closure. Any container in the sample that is under the required fill, or has
one or more defects shall be rejected. Rejected lots may be resubmitted for acceptance inspection
provided that the contractor has removed or repaired all nonconforming containers.
4.4.4 Protection test
4.4.4.1 Preparation of panels. The following procedures shall be conducted:
a. Cut five panels from steel that conforms to QQ-S-698.
b. Size the panels and locate the holes as shown in figure A7 of ASTM D 1748. Remove all
burrs, sharp edges and corners, including the edges of the holes.
c. Highly polish the panel with No. 3/0 emery paper prior to use. Next wash and clean the panel
in a solvent conforming to MIL-PRF-680, type 1. Then drain thoroughly and agitate in boiling 95-percent
methanol.
d. After cleansing, cool the panels in a desiccator. Care must be taken during cleaning and
preparation to ensure that the surfaces are not contaminated by fingerprints. Handle the panels only with
tongs during the cleaning operation and only with hooks during and after dipping.
4.4.4.2 Procedure. These steps shall be conducted:
a. Dip five panels in a suitable sample of lubricating oil which is maintained at 25°C +2°C,
remove and allow to drain for 2 hours at that temperature from glass, monel or stainless steel supports.
b. At the end of this period, suspend the panels in a humidity cabinet conforming to ASTM D
1748 for a period of 100 hours, and in such a manner that the drippage from the supports will not fall onto
the panels. Maintain the humidity within the cabinet at 100 percent relative humidity and at a dry bulb
temperature of 49°C +2°C for a 100-hour exposure period.
c. Remove the panels from the cabinet, clean them with naphtha and examine them. Panels
have failed the protection test if at the end of the test period one of the following conditions exists in the
significant areas of the panels as defined by ASTM D1748, figure A1.8, considering both sides of the
panel:
(1) A corroded area of 2-mm diameter or larger
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