MIL-DTL-917 Electric Power Equipment, Basic Requirements ForThis specification covers the basic requirements applicable to the design, materials, and construction of naval shipboard electric power equipment \(exclusive of communication equipment, information technology \(IT\) equipment, and combat systems [fire control and weapons control equipment]\). Unless otherwise specified herein, the electric equipment developed for shipboard use under the requirements of this specification are limited to a maximum 450 volt \(V\) alternating current \(AC\) and a maximum 1,000 V direct current \(DC\). This equipment is intended for use on surface and submarine naval vessels \(see 6.2\).

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18

MIL-DTL-917F(SH)

TABLE XXI. Processing of metals for corrosion resistance treatments where painting is not required. 1/, 2/

Metal

Treatment

Treatment document

Corrosion-resistant (see 3.3.2.3)

Not required

----

MIL-DTL-83488, Class 3, Type II 3/

Aluminum coating, ion vapor

deposited

Zinc coating (hot-dip galvanizing) 4/

ASTM A153/A153M

Electrodeposited zinc 4/

ASTM B633

Electrodeposited nickel

SAE-AMS-QQ-N-290, Type I (DS),

Ferrous metals

or ASTM B456

Nickel undercoat plus

SAE-AMS-QQ-N-290, Type I (DS),

electrodeposited chromium

or ASTM B456, Type DS, and

SAE-AMS2460

Electrodeposited silver

ASTM B700

Anodic treatment 5/

Aluminum and aluminum alloys

MIL-A-8625

NOTES:

Corrosion-resistant metal or metals processed for corrosion resistance may be painted for appearance and as

specified in 3.14.2.1.

Tin plating on copper conductors is at the option of the manufacturer.

These coatings have superior corrosion resistance in marine atmosphere and are preferred.

Unpainted zinc coatings shall not be used on equipment or parts to be packed in unventilated containers made

of unseasoned wood, unless desiccant is enclosed.

Anodized treatment is considered electronically non-conductive.