Approvals

Process Military Specifications Classification
Cadmium Plating AMS-QQ-P-416 Type 1 - Clear without supplementary treatment
    Type 11 - With supplemetary Chromate treatment, Iridite (gold), olive drab, and clear.
    Class 1 - .0005" thick
    Class 2 - .0003" thick
    Class 3 - .0002" thick
Nickel-Cadmium Diffused AMS 2416
Cadmium Plating
(Low Embrittlement)
MIL-STD-870/AMS 2401    
Cadmium-Titanium MIL-STD-1500 / AMS 2419 Type 1 - Clear without supplementary treatment
    Type 11 - With supplementary Chromate treatment, Iridite (gold), and clear
    Class 1 - .0005" thick
    Class 2 - .0003" thick
    Class 3 - .0002" thick
Chromium Plating AMS-QQ-C-320 / AMS 2406 Class 1 - Corrosion protective plating
    Class 2 - Engineering Plating
Copper Plating MIL-C-14550 / AMS 2418 TYPE I Class 0 - .001 - .005" thick
    Class 1 - .0010" thick (for carburizing shield or brazing operations).
    Class 2 - .0005" thick (as undercoat for Nickel and other metals).
    Class 3 - .0002" thick (to prevent basis metal migration into Tin layer to poison solderability).
    Class 4 - .0001" thick (same as .0002"),
Chemical Films MIL-C-5541/AMS-C-5541 A corrosion resistant coating for Aluminum and Aluminum Alloys. Several proprietary solutions meet this specification.
Electroless Nickel MIL-C-26074/AMS 2404 Class 1 - As coated condition.
    Class 2 - Conditioned (heated) for imporved hardness.
    Class 3 - on Aluminum
    Class 4 - on Aluminum
Nickel Plating
(Electrodeposited)
QQ-N-290A/AMS 2403 Class 1 - Corrosion protective plating
    Class 2 - Engineering plating
Passivate MIL-S-5002 / AMS 2700 "Surfaces treatments and inorganic coatings for metal surfaces of weapon systems""
  MIL-STD-171 (ORD) "Finishing of metal and wood surfaces"
  MIL-STD-808 (USAF) "Finishes, protective, for ground and ground support equipment.
  AMS-QQ-P-35 Passive treatment for corrosion resistant steels.
Inspection and Test for Surface Passivation MIL-STD-753 Method 100 Water Immersion Test
  Method 102 Copper Sulfate Test
  ASTM B117 Salt Spray Test
Magnetic Inspection AMS 2640/ASTM-E-1444    
Penetrant Inspection AMS 2645/ASTM-E-1417    
Rockwell Inspection MIL-STD-151    
Nital (Temper) Etch Inspection MIL-STD-867/AMS 2649