MIL-DTL-62027K
SOCIETY OF AUTOMOTIVE ENGINEERS, INC. (SAE)
SAE J527
- Brazed Double Wall Low Carbon Steel Tubing.
(Application for copies should be addressed to Society of Automotive Engineers, Inc.,
400 Commonwealth Drive, Warrendale, PA 15096.)
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. When specified (see 6.2), a sample shall be subjected to first article
inspection in accordance with 4.2.
3.2 Materials. Materials shall be in accordance with the manufacturer's materials for dolly
sets and shall be capable of meeting all of the operational and environmental requirements
specified herein. Materials shall be free of defects which adversely affect performance or
serviceability of the finished product. Asbestos, cadmium, and radioactive materials shall not be
used in this item. Radioactive materials are defined by Title 10, CFR, Parts 30 and 40, and other
radioactive materials in which the radioactivity is greater than 0.002 microcuries per gram or
0.01 microcuries total activity for the item (see 4.6.1).
3.2.1 Corrosion protection. The dolly set shall be fabricated from compatible materials
providing corrosion protection and coating adherence equal to or exceeding that provided by hot
dip galvanized 1020 steel, with coating thickness in accordance with ASTM A123 (or minimum
coating thickness of 19 micrometers (.75 mil) on pre-galvanized sheet 1.6 millimeters (mm)
(0.063 inch (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 4.4.1).
3.2.2 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each
other unless protected against galvanic corrosion by using the manufacturer's standard process
(see 4.6.1 and 4.6.2).
3.2.3 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 (see 4.6.1).
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