Electroless Nickel: Mid Phos 6% – 9%

Electroless Nickel 200Electroless Nickel plating is a nickel phosphorus alloy deposit plated by chemical reduction, without applying an external electrical current, onto a suitable substrate. Electroless Nickel provides very uniform, hard, lubricious coatings. The deposit uniformity allows plating of various coating thicknesses on any section of a part exposed to fresh plating solution. Grooves, slots, blind holes, threads, and even the inside of tubing can have the same thickness of coating. As a direct result of the deposit uniformity many post-plate finishing steps such as grinding, can be eliminated, thus lowering overall costs.

General Functional Properties:

  • Corrosion Resistance
  • Wear Resistance
  • Hardness 40 RC
  • Lubricity
  • Solderability and bondability
  • Uniformity of deposit regardless of geometries
  • Nonmagnetic properties of high phosphorous alloy


Electroless Nickel plating can be covered by the following specifications:

  • AMS 2404C, Electroless Nickel Plating (Replaces MIL-C-26074)
  • ASTM B656, Standard Guide for Autocatalytic Nickel-Phosphorus Deposition on Metals for Engineering Use
  • ASTM B733, Standard Specification for Autocatalytic Nickel-Phosphorus Coatings on Metal (Replaces MIL-C-26074) Bake @375 4 hours for up to 70 RC hardness for Hydrogen Embitterment


Excellent application for:

  • Cylinders
  • Slides
  • Pistons
  • Shafts
  • Stampings
  • Core Pins
  • Couplings
  • Molds
  • Valves
  • Gears