MIL-T-60916C (MI)
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
ASTM B 117 -
Salt Spray (Fog) Testing, Standard Method of
(Application for copies should be addressed to the American Society for
Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.)
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2.3 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. When specified (see 6.2), a sample shall be
subjected to first article inspection (see 6.3) in accordance with 4.4.
3.2 Material. Material utilized in the fabrication of the tube shall
be in accordance with drawings and specifications specified herein.
3.3 Motor tubes.
The motor tubes shall comply with all requirements
specified on drawing 1569403, and with all requirements specified in
applicable specifications.
3.4 Air test requirements.
Each motor tube shall withstand not less
than 15 pounds per square inch (psi) air pressure for 10 seconds with no
evidence of bubbles if the part is submerged in water as the leak detection
cubic centimeters/see.
method or with a leak rate to be not greater than
(c.c./sec.) leak rate if a dry method is used (see 4.8.3).
3.5 Surface and internal defects.
All motor tubes prior to painting
shall be free of surface imperfections on the interior and exterior surfaces
of the part which are indications of discontinuities internal to the metal:
cracks, lube bursts, pipes, laminations, segregations, porosity, flakes,
inclusions and other internal defects. Surface imperfections including pits,
seams, scale, blisters, shallow lube bursts, and other discontinuities which
do not intrude into the metal shall not be considered defects of this type.
3.6 Salt spray test.
The finished assemblies, after painting, shall
comply with an accelerated corrosion teat as specified in 4.8.5.
3.6.1 Salt spray panel test. The test panel, after receiving a
chemical film treatment, in accordance with MIL-C-5541, shall conform to an
accelerated corrosion test as specified in 4.8.6.
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