Black Electroless Nickel
Most Company Specifications
Precise plating thickness: .00012 - .0025 inches.
Hardness from 48 - 52 Rockewell C (up to 64 Rc with heat treating)
High Alloy Steel
Black Electroless Nickel Plating
Black electroless nickel plating combines the same exceptional deposit properties of traditional electroless nickel plating but with conductive, black surface finish. ADV offers a proprietary black electroless nickel plating that combines the exceptional lubricity, deposit uniformity, hardness and corrosion resistance of electroless nickel with a fully conductive and uniform black appearance.
ADV’s black electroless nickel plating is available in both medium and high phosphorus varieties. The level of phosphorus in the coating affects the deposit appearance and properties similar to traditional electroless nickel deposits. In addition, post-plate baking can transition the deposit from an amorphous to crystalline structure, which greatly increases the deposit hardness.
- Black Electroless Nickel Plating High Phosphorus (>10% P): Semi-bright in luster, high corrosion resistance with adequate deposit thickness, low as-plated stress, excellent choice for heavy build, Rc 48-55 (as plated), 66-70 (with heat treatment)
- Black Electroless Nickel Plating Medium Phosphorus (6-9%P): Bright in luster, good corrosion resistance with adequate deposit thickness, moderate as-plated stress, not recommended for heavy build, Rc 58-62 (as plated), 66-70 (with heat treatment)
The appearance of the black electroless nickel plating process is a function of the luster of the substrate and the selection of the process. The guidelines below will help with the proper selection and process:
Bright, Deep Black Appearance: A highly machined or polished substrate with Medium Phosphorous Black Electroless Nickel
Satin, Charcoal Gray Appearance: A rough, textured or bead blasted substrate with High or Medium Phosphorous Black Electroless Nickel
ADV’s black electroless nickel plating provides excellent wear resistance consistent with traditional electroless nickel. However, the black appearance can be worn through in aggressive wear points such as metal-on-metal sliding contact. Therefore, the application of the finish for high wear applications should be evaluated accordingly.