Will stainless steel be corroded when used for the metal strip of wound gaskets?
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The pipe is made of 20-grade steel, and the gasket used is a 1220 type wound gasket; the metal strips in this gasket are of 2 (304) grade. Therefore, these metal strips should be in direct contact with the carbon steel flange, and they are likely to corrode
Potential difference corrosion, but the corrosion occurs in the pipelines (carbon steel) rather than in stainless steel
Carbon steel and stainless steel can experience contact corrosion.
The impact is not particularly significant; stainless steel graphite wound gaskets are used for almost all carbon steel flanges, and leaks due to contact corrosion have never occurred.