AFC Anodising

2-4 Seagull Lane, Emsworth, Hampshire, UK, PO10 7QH
Telephone: +44 (0) 2392 008518

How to specify

an enquiry

"We understand Anodising is a complicated process and therefore at times it can get confusing to the customer".

This page helps to assist the customer to complete their enquiry in the simplest manner to ensure the customer gets exactly what they are asking for at the best price.


Below is a checklist of information needed, or that requires consideration, in order to allow us to provide you with the best possible service.
What parts you have:
Firstly specify your parts, quantity, desired turnaround and attach and technical drawings.

 
Specification:
Tell us the process you require and its relevant specification number. Click here to visit our specification page.

 
Required film thickness:
We need to know how much coating you want. Remember the thicker the coating the more protected your parts are. Don't forget to take tolerances into consideration.

 
Material:
We will need to know the material and grade to ensure the right process is carried out.
 
Pre Treatment:
Do you require any pre-treatments such as polishing or chemical brightening?

 
Post Treatment:
Do you require you work to be sealed, or dyed or P.T.F.E. coated?

 
Masking:
Can we process all over or do we have to mask? Remember it is much more costly to mask than to process an unnecessary area.

 
Jigging:
Where can we hold the part? Jigging marks will be visible.

 

About Film

Thickness

Information for engineers:


Anodising is an electrolytic conversion coating, it transforms aluminium on the surface of components into aluminium oxide. Since aluminium converts rather than deposits, some of the thickness of the coating is ingress into the material and some of the thickness is growth out of the material.

A good rule of thumb is that 50% of the anodic film is below the original surface and 50% is above. So a part that is anodised with a coating thickness of 10µm per surface would only have about 5µm of growth per surface.

Standards such as ISO 7599 make use of AA designations to specify coating thickness: AA5, AA10, AA15, AA20, AA25. Based on these it establishes minimum thicknesses. Most customers find it easier to simply specify a thickness range.

 

NOTE

from the AFC Technical Team

A 50 micron film will use up 25 microns of aluminium in its formation, thus it will create growth of only 25 microns per face.
Richard Oxley - Managing Director ( Over 25 years experience ) richard@afcanodising.co.uk