Bright Nickel Plating -
There is a nickel finish for almost any need. Nickel can be deposited soft or hard - dull or bright, depending on process used and conditions employed in plating. Thus, hardness can range from 150 - 500 Vickers. Can be similar to stainless steel in color, or can be a dull grey or light grey (almost white) color. Corrosion resistance is a function of thickness. Has a low coefficient of thermal expansion. Is magnetic. All steel parts having a hardness of Rc- 40 or greater require a post
bake at 375º+ 25º F for 3 hours. This specification has superseded the QQ-N-290 specification. |
Specification
|
Thickness
|
Comments
|
AMS-QQN-290 |
| Grade A |
0.0016" min. |
| Grade B |
0.0012" min. |
| Grade C |
0.0010" min. |
| Grade D |
0.0008" min. |
| Grade E |
0.0006" min. |
| Grade F |
0.0004" min. |
| Grade G |
0.0002" min |
|
Note: All steel parts having a tensile strength of 220,000 or greater shall not be nickel plated without specific approval of procuring agency.
Class 1 - For corrosion protection. With typical 0.0002" copper undercoating prior to the nickel plate.
Class 2 - For engineering applications. .0002" thickness unless otherwise specified
|
FED QQ-N-290
ASTM B-689
AMS QQ-N-290
AMS 2403L
AMS 2423D
|
|
|
