Galvanic Series in Seawater

 

 

 

Nobilty RankingMetal or Alloy
ANODIC
Actively CorrodeMagnesium anode alloy – high potential
Magnesium anode alloy – low potential
Aluminium anode alloys
Zinc anode alloys
Aluminium alloys
Cast iron
Carbon steel (mild steel)
Copper alloys (brass/bronze)
Cupronickels
Copper
Nickel
316 stainless steel (active)
Silver
Titanium
304 stainless steel (active)
Silver
Titanium
304 stainless steel (passive)
CATHODIC
Noble Passive316 stainless steel (passive)
Platinum
passive
Gold
Graphite
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