Electroless nickel plating

MVT: Electroless nickel plating

Electroless nickel plating is a materials processing method which is applied with an accuracy that is very high. The main reasons to opt for nickel plating are the following: anticorrosiveness, wear resistance and embellishment of components/parts made from steel, aluminium, copper and alloys of those metals.

Reasons for nickelizing items

Corrosion protection
Wear resistance
Uniform coating thickness

The main characteristics of electroless nickel plating are the following:

  • a homogeneous structure;
  • very good corrosion resistance;
  • a coating that is uniform - even for the most complex parts;
  • good adhesion to raw materials;
  • composition: 88 % up to 91 % of Ni and 9 % up to 12 % of P;
  • hardness grade: Vickers hardness number of 500 up to 950;
  • melting point: 890°C / 1634°F;
  • ductility up to 2 %;
  • magnetism: layers containing between 9 and 12 % of phosphorus are not magnetic;
  • coefficient of friction unlubricated: electroless nickel - electroless nickel: 0.45;
  • coefficient of friction lubricated: electroless nickel - electroless nickel: 0.25;
  • standards and specifications: DIN 50966, ISO 4527, ASTM B 656 - B733,0 MILC 260 74D, NFA 91-105.
Durability list of materials
Hardness after 1 hour of heat treatment
Effect of heat treatment on hardness grade