Copper Stainless Steel Reaction

However mixing these metals is not generally advised due to the potential for sudden pipe corrosion and discolored water.

Copper stainless steel reaction.

There are three commonly used metals for potable water plumbing pipes including stainless steel copper and brass. In addition the area ratio of stainless steel to copper altered copper corrosion behavior. The principal metals of concern in terms of direct contact are aluminum and zinc. These metals are used because of their durability and long lifespans.

I wish to use hard copper elbows to join aluminum tube frame members. Lead and copper are quite close on the nobility table to stainless steel and so the bimetallic corrosion risks should be small. Galvanic corrosion can be controlled by the use of sacrificial anodes isolation of the metals from electrical continuance protective plastic coatings or epoxy coatings or with corrosion inhibitors. Corrosion issues with aluminum copper and stainless steel 2004.

Iron and steel are generally not a problem unless their mass is similar or smaller than that of the copper. The elbows must be permanently joined to one frame member at each knock down joint. It is not necessary to isolate copper from lead tin or stainless steel under most circumstances. I am constructing a project utilizing a knock down aluminum tube frame.

Any corrosion product if washed onto stainless steel may however result in problems not associated with the bi metallic effect and so not be predicted from the tables.