FED-STD-791D
6.2 Fill another cup with sufficient quantity of grease to insure over filling of the
cup. (Sample for worked penetration, see 6.6.)
6.3 Cover the samples with aluminum foil.
6.4 Place the grease filled cups in an oven at the designated test temperature for
the required storage interval.
6.5 After completion of storage interval, remove the cups from the oven and allow
to cool to 25C (77F).
6.6 Conduct unworked and worked penetration measurements on the grease
samples in accordance with ASTM D 217.
7. CALCULATIONS
7.1 Calculate the change in worked penetration after storage as follows:
C= A- B
where:
C = change in worked penetration
A = penetration before storage
B = penetration after storage
8. REPORTING
8.1 Report the unworked and worked penetration after storage. Report the
difference in worked penetration before and after storage as the change in worked
penetration.
9. PRECISION
9.1 Precision data have not been developed for this method.
Method Prepared by:
Navy - NADC - 1986
225
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business