Apticote 400


Electroless Nickel –
Apticote 400

Apticote 400 electroless nickel logo

The Apticote 400 electroless nickel range, deposited by a complex solution, results in a remarkably even coating. From the range of electroless nickel coating options available, your requirements for wear resistance, corrosion protection (even in the most extreme environments) and aesthetic needs will be met.

Apticote 400 electroless nickel coatings can be applied in very thin deposits (minimum 5μm) with uniformity and dimensional precision on most metallic substrates, including mild steel, stainless steel, cast iron, aluminium and titanium. This allows the designer to choose the substrate and mating parts on the basis of a need for strength, light-weight or corrosion resistance.

Poeton’s strength lies in our fully automated lines, with a unique control system that accurately maintains the bath chemistry and provides a constant deposition rate.


apticote 400N

For maximum toughness
and general wear protection
– medium phosphorous

apticote 400P

For maximum corrosion
protection – high

apticote 400N

Heat Treated – For
improved wear resistance
– medium phosphorous

apticote 400D

For corrosion protection in
extreme environments –
medium phosphorous

Key Features

Icon showing small pieces abrasively wearing a part

High wear resistance

In abrasive situations, Apticote 400 Electroless Nickel can reduce the wear on substrates like stainless steel by over 50%. In adhesive, metal-to-metal situations, Apticote 400 provides even greater wear protection.

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Can be hardened to 1,000Hv

The hardness of the Apticote 400 nickel matrix can be increased to 1,000Hv by heat-treatment at 400˚C. Our superior process control ensures the best coating quality, with high hardness without excessive residual coating stress to cause brittleness.

Corrosion icon - acid spilling on to rectangle

Excellent corrosion protection

Corrosion protection by electroless nickel relies on the integrity of the coating; it is not a sacrificial layer and provides only a diffusion barrier. Hence, Poeton’s high level of plating skill and quality-controlled processing ensures deposits that have minimum defects.

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Thickness range 5 – 50 micron

The normal standard thickness of electroless nickel is 25μm, with 50μm sometimes being applied for more demanding wear or corrosion applications.

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Completely uniform coverage

Electroless nickel coverage is very even, unlike electroplated coatings, meaning that threaded screws will be replicated. Through holes and bores can be coated evenly provided the electrolyte has access and can be agitates, although coating down blind bores may require specialist jigging.

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No post-machining

Due to its even and accurate coverage, electroless nickel does not usually need machining. However, for precision bores it can be honed and for reflective surfaces it can be super-finished or highly polished.

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Excellent anti-fretting

The combination of high hardness and toughness of the Nickel, allows it to withstand the high frequency, low amplitude effects of fretting wear.




Spines and gears

Hydraulic pistons

Moulds and extruders

Cutting knives


Fasteners and couplings

Mirrors and reflectors

Fuel connectors

Sub-sea components

Medical equipment


Using extensive R&D capabilities, Poeton have developed the optimum pre-treatment sequences for each substrate type, so that Apticote 400 can be applied with confidence to materials like titanium and aluminium, as well as the more usual range of engineering and stainless steels.


The high integrity of the Apticote 400 Electroless Nickel coating ensures the coating has minimum defects. The highly controlled process and plating skill maximises corrosion protection demonstrated by the Apticote 400D variant providing up to 1000 hours of salt spray endurance.

Graph showing Apticote 400's superior salt spray endurance
Apticote 400