![]() ![]() Stainless Steel and Copper Plumbing Pipes Within the Same Systemīy looking at the list of common plumbing materials, you would think that copper and stainless steel could easily be connected together and cause minimal problems in the system. Zinc – used to coat galvanized steel pipes. ![]() According to a list by APPMFG, noble to base plumbing pipe metals in order include: When we talk about plumbing pipes, we are talking about only a few different metals with copper, brass and stainless steel being the most common. Order of Dissimilar Metals Used in Plumbing Pipes ![]() If the corrosion becomes severe enough, it can lead to premature failure of the pipe. When you pair a Noble metal with a Base metal, the Base metal gives its electrons to the Noble metal, resulting in corrosion of the Base metal. Noble metals do not like to share their electrons, while base metals share their electrons easily. Metal is typically classified into two categories, including Noble and base. The reason is the molecular makeup of dissimilar metals. It’s important to note that mixing these metals is not generally advised due to the potential for sudden pipe corrosion and discolored water. These metals are used because of their durability and long lifespans. There are three commonly used metals for potable water plumbing pipes, including stainless steel, copper, and brass. The unfortunate truth is that all of these metals don’t work well together, and when they are placed together in a plumbing system without the proper precautions, they can cause galvanic corrosion, which occurs when dissimilar metals are used in the same plumbing system within close proximity, usually touching. What types of metals are inside your plumbing system? Plumbing pipes can be manufactured out of iron, cast iron, stainless steel, galvanized pipe, brass and copper. ![]()
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