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Title: |
COATING, ELECTROLESS NICKELREQUIREMENTS FOR |
Number: |
MIL-C-26074 |
Revision: |
E notice 3 |
Scope: |
This specification covers the requirements for electroless (autocatalytic chemical reduction) deposition of nickel-phosphorous alloy coatings on metal and composite surfaces. |
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Classification: |
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Classes |
The nickel coating shall be classified in accordance with the thermal treatment applied subsequent to plating. |
Grades |
The nickel coatings shall be of the following grades. |
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| Details |
Description |
Can Do |
| Class 1 |
As plated, no subsequent heat treatment: A bake for hydrogen embrittlement relief in not considered a heat treatment. |
Yes |
| Class 2 |
Heat treated to obtain required hardness: May be used on all metals not affected by heating to 500F and above. |
Yes |
| Class 3 |
Aluminum alloys nonheat-treatable, and beryllium alloys processed to improve adhesion of the nickel deposit. |
Yes |
| Class 4 |
Aluminum alloys, heat-treatable, processed to improve adhesion of the nickel deposit. |
Yes |
| Grade A |
0.0010 inch minimum |
Yes |
| Grade B |
0.0005 inch minimum thickness |
Yes |
| Grade C |
0.0015 inch minimum thickness |
Yes |
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