Tartaric Sulphuric Acid Anodising


Anodising – Tartaric Sulphuric Acid Anodising

Tartaric Sulphuric Acid anodising (TSA) is typically 5 – 7µm thick. It is typically used as a pre-treatment to aerospace and defence paint systems and as a key alternative to Chromic acid anodising, as tartaric sulphuric acid anodising conforms with the latest REACH regulations.

In comparison to chromic acid anodised surfaces, TSA gives a slightly coarser grain structure, with additional surface porosity. It provides the optimum adhesion for subsequent paint priming without compromising corrosion protection. Our TSA carried out to AIPI 02-01-003, on rotating bar tests, have shown that the fatigue life of TSA treated aluminium samples is identical to that produced after chromic acid anodising.

Poeton worked with Airbus to be a pioneer of the tartaric acid anodising process and the first approved supplier to Airbus in the UK. Our facilities comply with AIPI 02-01-003 and BS EN 4704. We now carrying out the process at the two sites in the UK and in Poland. Each facility also supports this process with both NDT operations, paint facilities and automated part marking.

For advanced Tartaric Sulphuric Acid Anodising see Apticote 300TSA.

Materials Processed:

Aluminium Alloys

Tank sizes: Gloucester

2m x 1m x 1m

Tank sizes: Cardiff

3m 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.


Electrical icon

Electrical Insulation

Corrosion icon - acid spilling on to rectangle

Corrosion protection

Blue paint brush icon

Good paint adhesion

Square icon with cracks replicating fatigue

Minimises the fatigue loss, compared with other anodising techniques.


Pre-treatment for aerospace & defence paint systems

Launch rails


Fuel pipes & connectors

Missile locks & ejectors

Tartaric Sulphuric Acid Anodising