Hard Anodising


Anodising – Hard Anodising

Hard anodising is typically 25 to 50µm thick and used for providing wear resistance where surface contact loads are light, for instance in the low stress abrasive wear caused by food or pharmaceutical products. It is also be used for corrosion protection and thermal or electrical insulation.

Hard anodising can be combined with polymers for a wider range of low friction and non-stick applications. More information on these coatings can be found on our Apticote 350 page.

Poeton’s Hard anodising, irrespective of the type, benefits from the following advantages:

  • Fully automated lines
  • Accurately controlled chemistry and maintenance
  • Low noise, automated ramping power supplies
  • Professional Laboratory back up onsite
  • Highly trained and skilled operators
  • Comprehensive quality inspection

These levels of controls and automation allow Poeton’s hard anodising to have a more uniform structure, improving the hardness and ability to be honed.

For advanced hard anodising see Apticote 300 and for Hard Anodising combined with polymers see Apticote 350.

Materials Processed:

Aluminium Alloys

Tank sizes: Gloucester

2m x 1m x 1m

Tank sizes: Poland

1.2m x 1m x 1.2m

The tank sizes shown above are approximate sizes only. If you have a larger part then please contact us as we may still be able to help.


Diamond hardness testing icon

High Hardness

Gear icon with worn edge

Very low wear

Corrosion icon - acid spilling on to rectangle

Excellent corrosion resistance

Blue rectangle showing growth on top

Superb control of coating thickness

Icon showing an even coverage of material on a substrate

Uniform coverage

Machining tool grinding a part icon

No post-machining

Blue icon showing lines pointing to three different boxes

Coats a range of aluminium alloys

Blue rectangle icon with coating on top and stars showing good appearance

Pleasing visual appearance and feel


Gears and pulleys

Valve blocks

Hydraulic and pneumatics

Hinges, swivel joints and rod ends

Food chutes



Hard Anodising