Galvanic series

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The galvanic series (or electropotential series) determines the nobility of metals and semi-metals. When two metals are submerged in an electrolyte, while electrically connected, the less noble (base) will experience galvanic corrosion. The rate of corrosion is determined by the electrolyte and the difference in nobility. The difference can be measured as a difference in voltage potential. Galvanic reaction is the principle upon which batteries are based.

Galvanic series (most noble at top)[edit]

The following is the galvanic series for stagnant (that is, low oxygen content) seawater. The order may change in different environments.

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