SOWCADPLATE.pdf

STATEMENT OF WORK (CADMIUM PLATING)

1. Unless otherwise specified, parts are to be cadmium plated to the requirements of AMS-QQ-P-416, Revision E, plus the following

2. Coverage: There shall be no rack marks, air bubbles, pin holes nor any other bare areas, except those specifically denoted as such by the contract/purchase order/or bankcard order.

All internal and external threads shall have at least a presence of plating (verifiable by visual examination) and a maximum coverage thickness of .00040 inches. All surfaces not controlled for plating thickness by the contract/purchase order/or bankcard order shall have presence of plating (verifiable by visual inspection) and a maximum coverage thickness of .00080 inches. These requirements shall be met regardless of part configuration, contour, part size, and any in-process controls needed to perform the plating. (This includes all internal and external surfaces.)

3. Adhesion: Plating shall show no indication of separation from the base metal when tested in accordance with ASTM D3359-95A, and shall meet adhesion requirements of the governing plating specification.

4. Embrittlement Relief: All cadmium plated parts, regardless of hardness, must be baked, after plating, but prior to chromate finish, as specified below. Any parts exceeding R/C 36 (160 ksi) in hardness, shall also be subject to the following baking requirements between stripping and replating.

Time between Plating and Baking: shall not exceed 4 hours

Temperature for Baking: 375 F +/- 25 F

Time for Baking: 23 hours minimum

5. Corrosion and Hydrogen Embrittlement Tests: Although the vendor is not required to perform this test, the government reserves the right to perform the test at any time, at government expense.

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