AMS-P-27418

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AMS P 27418 Technical Notes

Scope: This specification covers the process and requirements for soft nickel plating.

Plating thickness: Unless otherwise specified, the plating shall be 0.0020 inch +/- 0.0003 inch thick on all surfaces to be plated which can be touched by a ball of 1/16 inch in diameter.

Plating hardness: Unless otherwise specified, the Knoop hardness of the plating after annealing shall not exceed 150 with a 500-gram load.

Number of articles in lot

Number of articles in sample (randomly selected)

Acceptance number (maximum number of sample articles nonconforming to any test)

15 or less

7

0

16 to 40

10

0

41 to 110

15

0

111 to 300

25

1

301 to 500

35

1

 

Ordering Data: Requisitions, contracts, and orders should be accompanied by drawings of the articles to be plated. If possible, these documents should include the following:

  • Title, number, and date of this specification
  • Instructions concerning the areas to be plated, deviations from the specified plating thickness, and any other necessary information pertinent to the plated surfaces.
  • Instructions concerning the number of articles to be selected for the thickness test.