Nickel Platings

Plating Guidelines

Black Nitride || Cadmium Platings || Dry Film Lubricants || Electro-Tin/Solderable Platings || Nickel Platings || Passivation of Stainless Steel || Zinc Platings

BRIGHT NICKEL OVER COPPER FLASH ( CN )

Applicable Industry Spec: ASTM B689, TYPE II

• The parts shall be capable of passing an adhesion test per ASTM B571 and the Hot Water Porosity Test per ASTM B689 for steel parts or the Flowers-of-Sulfur Test for porosity per ASTM B809 for copper and copper alloy parts.
• Typically, bright nickel over copper flash offered by PEM is .0001″ to .0004″ of nickel applied over a .00005″ minimum copper flash coat applied to all significant surfaces. Significant surfaces exclude such features as threads, holes, deep recesses and bases of angles.
• Steel parts requiring embrittlement relief after plating are baked according to industry standards.

ELECTROLESS NICKEL OVER COPPER OVER NICKEL STRIKE ( NC )

Applicable Industry Spec: ASTM B733, TYPE4, SC0, Class 3

• This finish is used to improve the corrosion resistance of heat treated 400 series stainless parts such as types SO4 and BSO4. Parts with this finish provide a minimum of 36 hours with no red rust when subjected to neutral salt spray testing per ASTM B117.
• Typical electroless nickel thickness is .00004″ to .00012″ (1 to 3 µm) applied over a .00002″ (0.5 µm ) maximum copper flash coat applied over .00002″ (0.5 µm) electrodeposited nickel strike to all significant surfaces. Significant surfaces exclude such features as threads, holes, deep recesses and bases of angles.
• Parts are baked after plating at 374 ± 18°F (190 ± 10°C) for 4 hours minimum to improve electroless nickel adhesion and for hydrogen embrittlement relief.

SEMI-BRIGHT NICKEL ( N )

Applicable Industry Spec: QQ-N-290, CLASS 1, GRADE G

• The parts shall be capable of passing an adhesion test per QQ-N-290.
• Typically, semi-bright nickel offered by PEM is .0002″ to .0004″ of nickel applied to all significant surfaces. Significant surfaces exclude such features as threads, holes, deep recesses and bases of angles.

SEMI-BRIGHT ELECTROLESS NICKEL( EN )

Applicable Industry Spec: MIL-C-26074, CLASS 1

• The parts shall be capable of passing an adhesion test per MIL-C-26074.
• Typically, semi-bright electroless nickel offered by PEM is .0002″ to .0004″ of electroless nickel applied to all significant surfaces. Significant surfaces exclude such features as threads, holes, deep recesses and bases of angles.