MIL-DTL-14538D
6.5.4 Trivalent chromium. Trivalent chromium is determined by first oxidizing all the chromium to
the hexavalent form and determining total chromium. Hexavalent chromium is determined by
conventional methods. The difference is the trivalent chromium. A useful range is 8 to 12%.
6.5.5 Additional information. Further details on operation and solution analysis may be obtained
by reference to Rock Island Arsenal Laboratory Report No. 55-2705 and Department of Commerce
publication PB111830.
6.6 Color. The color is a dark gray approaching a dull black. It may be waxed or oiled to
darken the surface.
6.7 Ozone depleting chemicals. Classes I and II ozone depleting chemicals should be avoided
when cleaning the basis metal.
6.8 Hazardous materials. The DoD has put together a list of hazardous or environmentally
damaging substances in a document called the SD-14. These chemicals should be avoided whenever
another finish can be substituted for the finish specified herein.
6.9 Subject term (key word) listing.
Acetic acid
Barium
Basis metal
Butyl rubber
Chromic acid
Chromium
Hydrogen embrittlement
Lead
Stress relief
6.10 Changes from previous issue. Marginal notations are not used in this revision to identify
changes with respect to the previous issue due to the extensiveness of the changes.
CONCLUDING MATERIAL
Custodians:
Preparing activity:
Army - MR
Army - MR
Navy - SH
Air Force - 11
(Project MFFP-0665)
Review activities:
Army - AR, MI, PT
Navy - AS, EC, OS
Air Force - 13, 19
DLA - DH(DCMC-OF, DLSC-LEQ)
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business