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 Keronite® 3000 

Electro-Ceramic Anodised Coatings (Keronite)

Application areas for Apticote Keronite 3000

Apticote Keronite 3000 is a unique electro-ceramic process that transforms the surface of light-weight alloys to provide thick, hard, tough and wear resistant layers. It is based on a liquid electrolyte to provide surface properties that are unmatched by any conventional conversion or anodising approach.

Poeton offer a range of Apticote Keronite 3000 variations, one of which will be appropriate to your alloy composition and satisfy your particular requirements for wear resistance, corrosion protection or reduced friction.

The Apticote Keronite 3000 Options

 Ap 3000A   For Aluminium 
 Ap 3000M   For Magnesium 
 Ap 3000T   For Titanium 


Substrate Materials

Aluminium Alloys

2000 series
5000 series
6000 series
7000 series
Cast alloys with less than 8% Si (LM25 is most common)

Magnesium Alloys

Any Mg alloy can be treated, the most common being AZ91, AM60, WE45 and WE54.

Titanium Alloys

6Al/4V/1Mo (IMI 318) and pure Ti are most common.



Apticote Keronite 3000 coatings are used in a wide range of industries. For example:

  • Textiles
  • Bicycle brakes and frames
  • Automotive bores and pistons
  • Military and Defence
  • Aerospace
  • Oil and Gas
  • Nuclear
  • Marine and Chemical Industries
  • Energy and Power Generation
  • Food and Drink
  • Consumer
  • Engineering
  • Plastic Moulding
  • Electronics   

Primary Features of Apticote Keronite

  • Superb corrosion resistance (> 5,000hrs salt spray)
  • Extremely hard (up to 1,500Hv)
  • Effective undercoat for paints and polymers
  • High wear resistance, in both abrasive or sliding situations
  • Very effective thermal barrier
  • Thick coatings, up to 150µ, with predictable coverage and dimensional control
  • Superb heat resistance
  • High dielectric strength
Some Key Benefits of Apticote Keronite
  • Life of textile machine parts increased 10-fold
  • No wear or leakage with seals
  • Reduced weight, with no wear, for bike brakes, clutches and frames.
  • Light weight magnesium leisure wear, spectacles and watches, with no corrosion
  • Coated piston skirts reduce wear
  • Coated piston crowns give more efficient combustion.
  • Eliminates galvanic corrosion cells with titanium components
  • Can replace expensive solid ceramics with a cost-effective coating
The Apticote Keronite Process
Glow discharge

The process uses a proprietary electrolyte with a PC controlled, high power electrical supply, with strict monitoring of the batch chemistry, process temperature and agitation. Whilst processing, the part glows, as in the picture.

Key Performance Data

Superior corrosion protection

Corrosion Protection - Apticote Keronite 3000 gives superb corrosion resistance. Unlike ordinary anodising, the coatings are dense and thick. On 6082 alloy, for instance, the coating will provide 5,000 hours with no corrosion spots in a standard salt mist exposure test.

Thickness and Coverage - Coating thickness is typically 50 to 70µ, but 150µ is possible if the application demands. The outward surface growth is 30% of the total thickness. Penetration down holes is to one diameter No cracking on sharp cornersdeep, but special tooling can provide coverage down long tubes or bores if required. Unlike anodising, Apticote Keronite 3000 can coat a sharp corner without cracking.

Thermal Barrier - The Apticote Keronite coating is a superb insulator; ideal for piston crowns, kitchenware and other applications where protection from heat conduction is needed.

Superior wear resistance

Wear Resistance - Apticote Keronite 3000 is highly resistant to both abrasive and adhesive wear. The graph shows the relative wear rates in a Taber Abrasion test. It reflects, for instance, the results that are obtained against synthetic textiles and explains the huge benefits that are gained.

Effect on Fatigue - Rotating bar tests show a reduction in fatigue strength of 7075 Al Alloy of only 14%, much less than is caused by plating or hard anodising.

Finishing - Apticote Keronite 3000 builds with a duplex layer, the outer surface being slightly rough. To avoid abrasion of mating parts (e.g. brake pads), the surface can be easily polished. Ask Poeton for advice.

Cylinder Bores - Apticote Keronite 3000 provides unique wear and lubrication properties on high performance cylinder bores. Ask Poeton for advice on coating and honing.

Keronite Approver Partner

Poeton are an Approved Partner of Keronite® International Limited

Keronite® is a registered trademark of Keronite International Limited

Printer Friendly Versions

Click here to download a printer friendly version for your retention.

Click here to download a PDF with more details of Apticote Keronite 3000 on magnesium.

For details of all our processing capabilities, size and capacity, please follow this link.