Will brass corrode in Saltwater?
Will brass corrode in Saltwater?
(OP)
I have read many things online about how brass will corrode in water and then I have read that it will not corrode in water. I am asking this because I want to order brass nozzle fittings onto the end of a hose. I will be using saltwater as the solution that is going through the hose. Will this damage the nozzle?





RE: Will brass corrode in Saltwater?
Before salt spray testing
Figure 3. Brass test pieces after 96-hour salt-spray exposure. The RHS hose barb tested with the clear vinyl tubing attached.
“after 96 hours' salt-spray exposure. The brass products, Figure 3, are clearly tarnished and contain numerous areas covered by a gray-green corrosion product. The corrosion product appears to be thin and adherent, even in threaded regions. “
Figure 7. Brass parts after 1000 alternate immersion cycles in 3.5% rock salt solution.
Note: the zinc plated steel parts comparison tested came out worse; plus corrosion on steel intensified whereas corrosion on brass seemed to form a somewht protective coating.
From
h
RE: Will brass corrode in Saltwater?
RE: Will brass corrode in Saltwater?
There are quite a few brass alloys that are not exotic that will give fine service is seawater. The CDA web site has a lot of info. www.copper.org
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RE: Will brass corrode in Saltwater?
As Ed said there are a lot of different materials classified as "Brass", eg Naval brass, Aluminum brass.. that are used in Sea Water service and perform well.
Usually alloys with higher Zn content are more susceptible to dezincification and can be suppressed by the presence of small amount of arsenic and other elements.
In my opinion to answer your question and decide the suitability of brass, it would be necessary to know the time of exposure of the fittings to seawater, i think it's not a continuous service, if the water is treated or not and the criticality of service.
in this links you can find more info about copper alloy in seawater:
http
hope this help
regards
Strider
http://www.corrosionist.com