MIL-PRF-62315C
(Application for copies may be obtained from the American Welding Society,
550 N.W. LeJeune Road, Miami, FL 33126.)
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 4.3.
3.2 Materials. Materials shall be in accordance with the manufacturer's material
specifications for heaters. Materials shall be corrosion resistant or treated to prevent corrosion.
The materials shall be capable of meeting all of the operational and environmental requirements
specified herein (see 4.5.1). Recycled materials is acceptable when processed to make new.
3.2.1 Dissimilar metals. Except where necessary to complete an electrical circuit, the use
of dissimilar metals in metal to metal contact shall be avoided (see 4.5.1).
3.2.2 Steel components. Non-painted steel components, other than stainless steel, shall
be zinc plated according to ASTM B633, type II class Fe/Zn 13 or equivalent. Heat radiating
surfaces may be aluminized steel (see 4.5.1).
3.2.3 Aluminum components. Aluminum components shall be protected by chemical
conversion coating which shall provide the components with the maximum corrosion resitance as
well as optimum paint adhesion (see 4.5.1).
3.2.4 Identification plates. Nameplates shall be furnished in one of the configurations as
specified below (see 4.5.1):
a. Material and construction shall conform to A-A-50271. Nameplate shall be
permanently attached with metal fasteners.
b. Adhesive backed aluminum foil, except backing sheet, which may be made of
paper, shall be removable intact by stripping without use of water or other
solvents. Plates shall have an average adhesion, over bare and painted metal
surfaces, of not less than 50 ounces per inch (oz/in.) of width at 77 +5 degrees
Fahrenheit (°F).
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