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challenge: protection on different aluminium alloy substrates (2024 T3, 2024 T81, 7075 T73, 6061 T6 and 5083 H111)
A solution for aluminium conversion coating with good SST performances
This independent study ranks SOCOSURF TCS / SOCOSURF PACS as Nº1 solution.
Phase 1 of the evaluation SOCOSURF TCS / SOCOSURF PACS is one of “the most promising chemical conversion alternatives for all the aluminium alloys, including AA2024.”
Phase 2 – extended testing SOCOSURF TCS / SOCOSURF PACS is the only alternative to BONDERITE M-CR 1200 that passed 336 hrs neutral salt spray with less than 5 pits on all alloys.
More testing were done: such as resistivity checks MIL DTL 81706, humidity testing ASTM D2247 and thermal cycling
Last phase of the evaluation – “Long Term Environmental Test Programme” SOCOSURF TCS / SOCOSURF PACS was selected as a stand-alone protection and with primers & topcoats.
SOCOSURF TCS and SOCOSURF PACS are an alternative process to chromium VI for conversion treatments and for sealing after anodizing. On aluminium alloys, the corrosion protection provided is comparable to the hexavalent chromium effect.
To know more about Aluminium Surface Treatment, download the brochure:
Reference: European Space Agency – Clean Space industrial days (27 Oct 2017) Alternative pre-treatments to aluminium Replacements for Hexavalent Chromate Conversion Coatings