FED-STD-791D
4.5. Vacuum pump, capable of reducing the pressure to at least 10 µm of mercury or
less.
4.6 McLeod gauge or other suitable pressure measuring device.
4.7 Water bath, capable of maintaining a temperature of 80° 3°C (175° 5°F) and
sufficient size to contain the test cell.
4.8 Laboratory safety shield, constructed of either safety glass or wire reinforced plastic.
4.9 Balance, sensitivity 0.1 mg.
4.10 Microscope, 20X magnification.
4.11 Forceps, stainless steel.
5. MATERIALS
5.1 CAUTION SOME MATERIALS ARE TOXIC AND HAZARDOUS. The
materials references and standards listed in this section must be handled carefully. Federal Test
Method 10000, Material Handling Safety Precautions, is a reference which lists all toxic and
hazardous materials cited in FTMS 791. The synonyms, life hazard, flammability, handling and
storage precautions, emergency treatment and measures, and spill practices of each chemical are
explained.
5.2 Toluene, reagent-grade [2,3,0].
5.3 Acetone, reagent-grade [1,3,0].
5.4 Nitric-sulfuric acid mixture, approximately 1:10 [3,0,2].
5.5 Abrasive paper, silicon carbide, 240 grit.
5.6 Steel specimens of approximately 0.15
0.7
7.5 cm made from QQ-S-698 mild
steel shall be used.
6. PROCEDURE
6.1 Definitions
6.1.1 Thermal stability is the resistance to permanent changes in properties of the
lubricant caused solely by heat.
6.1.2 Corrosion is any surface damage of the steel specimen resulting in a weight
change.
144
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business