Curated with aloha by
Ted Mooney, P.E. RET
The authoritative public forum
for Metal Finishing 1989-2025
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Effect of steel in Alodine 1200 solution
If I leave a piece of steel in Alodine tank, it will effect aluminum parts and contaminate solution?
Nadia Sarraf- Toronto, On, Canada
2002
You are asking about a specific proprietary product, so you should get your answer from the manufacturer of that specific proprietary. However, were you to ask the same question in generic fashion, I would have said that I have actually seen chromate tanks built of plain steel--so it should not be a problem.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2002
Alodine 1200 and equivalent products such as Iridite 14-2 contain a small amount of complexed ion. So that the solutions will test positively for iron. However a large excess of uncomplexed iron is detrimental to the salt spray results. So it depends on how long the iron object was in the solution.
Don Baudrand
Consultant - Poulsbo, Washington
(Don is co-author of "Plating on Plastics" [on Amazon or AbeBooks affil links]
and "Plating ABS Plastics" [on Amazon or eBay or AbeBooks affil links])
2002
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