Cadmium
Cadmium
This specification covers requirements for electro-deposited cadmium coatings applied to iron or steel articles to protect them from corrosion.
Stress Relief: All parts with ultimate tensile strength 160 ksi and above at a minimum 190 deg C for 4 hours or more before cleaning and plating.
Hydrogen Embrittlement Relief: All electroplated parts 160 ksi or higher shall be baked at 190 deg C for 8 hours.
QQ-P-416
Type I
As Plated
Type II
With colored chromate conversion coatings.
Type III
With phosphate conversion coatings.
Class I
.00050 inch thick minimum
Class II
.00030 inch thick minimum
Class III
.00020 inch thick minimum