London Colney Anodising - specialist in alocrom, coloured anodising  




Leading UK specialists in the surface treatment of aluminium and its alloys, London Colney Anodising offers a varied range of services including Sulphuric Acid Anodising in a range of 14 colours, Alocrom 100, 1000 & 1200, Irilac 1001 and mechanical polishing.

Aluminium Anodising
Sulphuric acid anodising is the most commonly used. It can produce a transparent film of optimum corrosion resistance. The film thickness would vary depending on the application, from between 3 & 25 microns; you would be advised as to the most suitable by our technical team.

Coloured Anodising
Mute Colour Samples
With sulphuric acid anodising a dye can be deposited into the top surface of the anodic film. The application of this type of anodising is very widespread with interior fittings and fancy goods taking advantage of the great range of bright colours available.

Chromate Conversion
At LCA we offer Alocrom 100, 1000 & 1200, which give a complex chromate film over the entire surface of the aluminium. 

Alocrom 100 - Bluish/green coating which is very durable and ideal for protecting against oxidation even in humid conditions. It has a low electrical conductivity.

Alocrom 1000 - Clear coating which gives a high electrical conductivity, but with less durability than alocrom 100 or alocrom 1200.

Alocrom 1200 - Iridescent gold coating giving medium electrical conductivity and good durability with a good key for painting.

Finishes available:-
· Alkali Etching. 
· Chemical Brightening. 
· Sulphuric Acid Anodising to Defstan 03-25 / 2. 
· Range of 14 colours. 
· Mechanical polishing & graining. 
· Sandblasting. 
· Alocrom 100 / 1000 / 1200 - to Defstan 03-18 / 1. 
· Irilac 1001 Lacquer. 
· Electro Bronze. 
· Dual Finish / Rear Alocrom / Silver Front. 

If you would like to contact us about any of our aluminium alloy treatment services then click here for more information.