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.