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Diffused electroless nickel

High phosphorous diffused electroless nickel plating is a Kanigen® electroless nickel deposit containing 10 wt% phosphorus (P). Following heat treatment >600 °C, a diffusion layer appears in the steel substrate resulting in:

  • High corrosion resistance
  • Excellent wear resistance under extreme working conditions

Our solutions

Underwater Environment

Diffused electroless nickel is designed to meet the most extreme requirements in terms of corrosion and wear resistance in a subsea environment.

Protection Against Corrosion

Thanks to its diffused layer into the  substrate, the part remains protected, even after plastic deformation.


The layer is abrasion resistant and, following the diffusion heat treatment with 750 HV0.1, its hardness is enhanced.

Reduced Friction

Diffused electroless nickel greatly reduces adhesive wear.


This type of deposit is generally used in (sub)marine environments to meet extreme requirements in terms of:

  • Corrosion resistance (even after deformation)
  • Wear resistance (abrasive)

Applications :

  • Natural gas flow measurement products
  • On- and offshore
  • (Sub)marine (subsea)

Processed Materials

The electroless nickel plating process makes it possible to treat a broad spectrum of materials used within industry. Diffusion heat treatment is usually carried out on structural steel and cast iron. Some customers request its application on alloy steels.

Treatments are carried out in barrels, rack-plated or with dedicated fixtures. If appropriately designed and prepared, mechanically-welded equipment can also be treated.

corrosion resistance even after plastic deformation

Corrosion Resistance

Following the diffusion of the layer into the substrate, up to a depth of 2 to 4 µm (depending on the applied temperature and time), this layer becomes very resistant to corrosion, even following plastic deformation!

diffusion of the layer to a depth of 2 to 4 µm
very resistant layer

Technical Properties

  • Contains 10 wt% P (Phosphorus).
  • The deposit is under compressive stress.
  • For a 75 µm layer, the diffusion layer depth obtained following heat treatment is 2 to 4 µm in structural steel.
  • After bending over a mandrel at a 180° angle, until plastic deformation of the substrate (according to ASTM 571), the diffusion layer does not show any cracks.
  • Hardness following diffusion heat treatment: 750 HV0.1.

Gallery on surface treatment by electroless nickel plating

processing for the natural gas industry - ultrasonic gas flow meters
processing of very large parts
processing of hydraulic cylinder components exposed to extreme conditions
processing of heavy lifting components and lifting safety systems
 application on oil valve components
compliance with standards applied in the subsea sector

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