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316 stainless and copper corrosion
- Thread starter zinman
- Start date
EdStainless
Materials
What kind of water? what is the conductivity?
Probably, yes.
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Rust never sleeps
Neither should your protection
Probably, yes.
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Rust never sleeps
Neither should your protection
- Thread starter
- #3
CalvinKelly
Materials
EdStainless
Materials
Your copper will not last long.
Even if you electrically isolate the parts you will see preferred attack of the Cu in these conditions.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
Even if you electrically isolate the parts you will see preferred attack of the Cu in these conditions.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
Under 'normal' conditions, the copper will corrode.
Remember though, only SS in the passive state (usual) is more noble to copper. SS can become active & corrode if the surface oxide passivating film is disrupted by the presence of certain ions or acids. A study of nobility inversion in galvanic corrosion in the Cu-316 SS system caused by Fe(+3):
One conclusion (with which I am sure all will agree):
"From the practical point of view, any galvanic contacts of stainless steel, carbon steel and copper in water are undesirable."
For more information on preventing all types of corrosion when using stainless, see
Remember though, only SS in the passive state (usual) is more noble to copper. SS can become active & corrode if the surface oxide passivating film is disrupted by the presence of certain ions or acids. A study of nobility inversion in galvanic corrosion in the Cu-316 SS system caused by Fe(+3):
One conclusion (with which I am sure all will agree):
"From the practical point of view, any galvanic contacts of stainless steel, carbon steel and copper in water are undesirable."
For more information on preventing all types of corrosion when using stainless, see
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