Finishing Suggestion
Finishing Suggestion
(OP)
Can someone recommend the most corrosive resistant finish avaliable? Here's what I've got.
I recently tested a unit that was anodized per MIL-A-8625, type III, Class 2. The unit was tested under MIL-STD-810 salt fog requirement for 30 days and failed miserably.
Can anyone recommend anything?
Thanks.
I recently tested a unit that was anodized per MIL-A-8625, type III, Class 2. The unit was tested under MIL-STD-810 salt fog requirement for 30 days and failed miserably.
Can anyone recommend anything?
Thanks.





RE: Finishing Suggestion
Material, condition, service, temp, desired outcome, cost restraints, quanities....
RE: Finishing Suggestion
"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."
RE: Finishing Suggestion
Paints are the usual solution, and the biggest problem is getting an effective thickness to work on sharp corners, which most paints pull back from. To get around this some people use a powder coat system applied electrostatically.
If you can redesign the part to get rid of sharp corners that is very helpful.
As to which paint or powder system to use, sorry I can't remember any trade names, but we used two part epoxy paints, and I think acrylic is used for aluminium wheels, which suffer the same sort of problem.
Cheers
Greg Locock
RE: Finishing Suggestion
Diamond.
On aluminum you can generate a saphire coating.
(Well he did say "the most corrosive resistant finish avaliable")
Crashj 'absolutely' Johnson
RE: Finishing Suggestion
"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."
RE: Finishing Suggestion
If sea-water/corrosive service is a critical aspect, then try alloys that are designed for this environment... and rely less on the corrosion-protective systems.
Regards, Wil Taylor
RE: Finishing Suggestion
wktaylor recommendation best, unless spec requirement is firm. fyi, there are boats throughout Alaska (North Slope) constructed of marine grade aluminum, without external coatings. A thought would be to contact a boat manufacturer as I do not know specific construction materials. -pmover
RE: Finishing Suggestion