FED-STD-791D
a. Fill test tube to a depth of approximately 2.5 cm with test fluid. Spread the
grease evenly on both sides of the aluminum strip, and place the strip in the test
tube so that it is half immersed in the test fluid. Stopper test tube, and allow it to
stand for 8 h at room temperature (approximately 25C).
b. After 8 h, remove strip from test tube (being careful not to disturb sample), and
dip once into fresh test fluid. Examine sample while wet for swelling, loss of
adhesion, blistering, cracking, or deterioration, and report observations.
c. Allow strip to dry for 24 h at room temperature (approximately 25C), then
re-examine the sample for the signs of deterioration, and report observations.
7. CALCULATIONS
7.1 Calculate the percent of sample soluble in test fluid as follows:
200 A
Percent solubility =
B
where:
A = weight of sample, mg (see 6.1 f).
B = weight of original sample, mg.
8. REPORTING
8.1 Report percent solubility as determined under 6.1 f.
8.2 Report condition of grease on strip as determined under 6.2. b and c.
9 PRECISION
9.1 Precision data have not be developed for this method.
Method prepared by:
Navy - NADC - 1986
324
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business