MIL-DTL-81706B
6.3 Interchangeability. The various products approved under this specification are
interchangeable within each class insofar as performance is concerned, but are not
interchangeable from a chemical standpoint, that is, different products cannot be mixed. The
product from one manufacturer should not be mixed or used to strengthen an existing solution
from another supplier. As the chemical film materials are proprietary products, the ingredients,
processes, the method of application (for example, spray, brush, and immersion), and the
equipment required for application vary with the different products. Contractors and military
activities should take this into account in procurement, in the design of parts, and in the
establishment of facilities. Detail drawing of parts requiring treatment with materials conforming
to this specification should specify the required class, 1A or 3, and optionally, the required type,
I or II.
6.3.1 Field use. Products used for brush application method B and pen or wipe application
method D are available for field use in repainting and the repair of existing corroded areas, and
are listed in the applicable qualified products list. Products used for touch-up brush application,
already premixed, are available for field use in kits. The chemical conversion materials are one
of the products to be used in treating small areas of corrosion on weapons systems.
6.4 Other alloys. The acquisition activity may select other alloys and other types of
specimens more representative of production work for the conformance inspection of corrosion
resistance of the chemical conversion material. Criteria should be supplied by the acquisition
activity.
6.5 Qualification. With respect to products requiring qualification, awards will be made
only for products which are, at the time of award of contract, qualified for inclusion in Qualified
Products List QPL-81706 whether or not such products have actually been so listed by that date.
The attention of the contractors is called to these requirements, and manufacturers are urged to
arrange to have the products that they propose to offer to the Federal Government tested for
qualification in order that they may be eligible to be awarded contracts or orders for the products
covered by this specification. Information pertaining to qualification of products may be
obtained from Commander, Naval Air Warfare Center Aircraft Division, Materials Division,
Bldg. 2188, Patuxent River, MD 20670-1908.
6.5.1 Retention of qualification. In order to retain qualification of a product approved for
listing on the qualified products list (QPL), the manufacturer will verify by certification to the
qualifying activity, that the manufacturer's product complies with the requirements of this
specification. Unless otherwise specified, the time of periodic verification by certification will
be in two-year intervals from the date of the original qualification, and will be initiated by the
qualifying activity. No change will be made in formulation, raw materials or supplier(s) of raw
materials, methods of manufacture, equipment, or geographic location without prior written
Government approval. The Government reserves the right to re-examine the qualified product
whenever deemed necessary to determine that the product continues to meet any or all of the
specification requirements.
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