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Metals in Seawater - Galvanic Series

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Galvanic series in seawater at 25oC (77oF) are indicated below with the most noble at top.

  • Platinum
  • Gold
  • Graphite
  • Titanium
  • Silver
  • Chlorimet 3 (62 Ni + 18 Cr + 18 Mo)
  • HASTELLOY®; alloy C (62Ni + 17 Cr + 15 Mo)
  • INCONEL® alloy 625
  • INCONEL® alloy 825
  • Stainless steel, type 316 (passive)
  • Stainless steel, type 304 (passive)
  • Stainless steel, type 410 (passive)
  • Monel alloy 400
  • INCONEL® alloy 600 (passive)
  • Nickel 200 (passive)
  • Copper alloy C71500 (Cu 30% Ni)
  • Copper alloy C23000 (red brass 85% Cu)
  • Copper alloy C27000 (yellow brass 65% Cu)
  • HASTELLOY® alloy B
  • INCONEL® alloy 600 (active)
  • Nickel 200 (active)
  • Copper alloy C46400
  • Copper alloy C46500
  • Copper alloy C46600
  • Copper alloy C46700 (naval brass)
  • Tin
  • Lead
  • Lead-Tin solders
  • Hastelloy A
  • Stainless steel, type 316 (active)
  • Stainless steel, type 304 (active)
  • 50 - 50 lead tin solder
  • Stainless steel, type 410 (active)
  • Cast iron
  • Wrought iron
  • Low carbon steel
  • Aluminum alloy 2117
  • Aluminum alloy 2017
  • Aluminum alloy 2024
  • Cadmium
  • Aluminum alloy 5052
  • Aluminum alloy 3004
  • Aluminum alloy 3003
  • Aluminum alloy 1100
  • Aluminum alloy 6053
  • Galvanized steel
  • Zinc
  • Magnesium alloys
  • Magnesium
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