MIL-DTL-15370J
3.3.4 Corrosion-resisting steel. Corrosion-resisting steel plates, sheets, and strips shall consist of extra low carbon
A582/A582M and corrosion-resisting steel pipes shall conform to MIL-P-24691/3.
3.3.5 Aluminum alloy. Aluminum alloy plates and sheets shall conform to composition 6061 of SAE-AMS-QQ-A-
250 or ASTM-B209, extruded aluminum alloy shall conform to composition 6063 of SAE-AMS-QQ-A-200, ASTM-
composition 4047. Aluminum alloy casting shall conform to alloy A360 of ASTM-B85/B85M or SAE-AMS-4290,
whichever applies, class 8 of ASTM-B108/B108M, alloy 40E of ASTM-B26/B26M, or 2011 of SAE-AMS-QQ-A-225
and ASTM-B211.
3.3.6 Magnesium alloy. Magnesium alloy shall be composition AZ31B, condition H24, in accordance with SAE-
AMS-4377. Unless otherwise specified (see 6.2), magnesium couplers shall not be supplied for Naval applications.
3.3.7 Dissimilar metals. Unless suitably protected against electrolytic corrosion, dissimilar metals as defined in
MIL-STD-889 shall not be in intimate contact.
3.3.8 Fungus inert material. Material used in the construction of directional couplers shall be fungus inert
(reference ASTM-G21 for assistance).
3.3.9 Bonding. Bonding shall conform to class R of MIL-STD-464.
3.3.10 Insulating compounds. Insulating compounds shall satisfy commercially accepted criteria for printed circuit
board assembly coatings.
3.3.11 PTFE. PTFE shall conform to ASTM-D1710.
3.3.12 Rubber. Rubber shall be suitable for use over the specified temperature range.
3.3.13 Iron-nickel alloy. Iron-nickel alloys shall conform to SAE-AMS-I-23011.
3.3.14 Pure tin. The use of pure tin as an underplate or final finish is prohibited both internally and externally. Tin
content of the directional coupler components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed
with a minimum of 3 percent lead, by mass (see 6.8).
3.4 Design and construction. Directional couplers shall be of the design, construction, and physical dimensions
specified (see 3.1). Directional couplers shall be of the lightest practicable weight consistent with the strength
required for sturdiness, safety, and reliability.
3.4.1 Operating frequency range. The frequency range shall be as specified (see 3.1).
3.4.2 Flanges. Flanges shall be designed and manufactured as to provide the mating characteristics of the flange
specified in accordance with MIL-DTL-3922.
3.4.3 RF connectors. The connectors shall be as specified (see 3.1). Material and gauging for receptacle
connectors shall conform to requirements of MIL-PRF-39012 or Drawings REA 49330 or REA 49331, whichever is
applicable.
5
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business