MIL-PRF-62540A(AT)
GLOBAL ENGINEERING
GM 9540P
- Accelerated Corrosion Test.
(Application for copies should be addressed to Global Engineering, 15 Invernessway,
Englewood, CO 80112.)
2.4 Order of precedence. In the event of a conflict between the text of this document and
the references cited herein, the text of this document takes precedence. Nothing in this document,
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
3. REQUIREMENTS
3.1 First article. Unless otherwise specified (see 6.2), the contractor shall furnish harness
and cable assemblies which shall be subjected to first article inspection (see 4.2).
3.2 Materials. Materials used shall be in accordance with the accepted commercial
materials specifications for harnesses. The materials shall be capable of meeting all the operational
and environmental requirements specified herein. Materials shall be free from defects which
adversely affect performance or serviceability of the finished product. Exposed functional parts
shall be fabricated from suitable corrosion resistant materials. The corrosion resistance shall equal
to or exceed that provided by hot dip galvanized 1020 steel, with coating thickness in accordance
with ASTM A123 (or minimum coating thickness of 19 micrometers (0.75 mil) on pre-galvanized
sheet 0.16 millimeters (mm) 0.063 inches (in.) or less), with zinc phosphate pre-treatment. A
proposed alternate design shall be compared to a galvanized sample (as described above) using the
Accelerated Corrosion Test GM 9540P Method B 120 cycles, or until prior failure of one of the
items with defects such as extensive corrosion at scribe or significant penetration of base material
(see 4.6.1 and 6.4).
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,
or environmentally preferable materials should be used to the maximum extent possible provided
that the material meets or exceeds the operational and maintenance requirements, and promotes
economically advantageous life cycle costs.
3.3 Design and construction. The harness and cable assemblies shall conform to the
manufacturer's design and construction except for weight, length and harness assembly
configuration which shall be in accordance with the applicable harness and cable assembly
drawings. The installation details of figure 1 through 5 shall guide fabrication where it is not
detailed on the drawing (see 4.6.1).
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