titanium

[TomP]

This is the galvanic series of metal in a low oxygen sea water environment. The most noble is at the top (graphite). When looking at possible reactions the further the two metals are from each other, the more reactive. Notice stainless steel (316) and aluminum as an example.

Graphite
Palladium
Platinum
Gold
Silver
Titanium
Stainless steel (316 passive)
Stainless Steel (304 passive)
Silicon bronze
Stainless Steel (316 active)
Monel 400
Phosphor bronze
Admiralty brass
Cupronickel
Molybdenum
Red brass
Brass plating
Yellow brass
Naval brass 464
Uranium 8% Mo
Niobium 1% Zr
Tungsten
Stainless Steel (304 active)
Tantalum
Chromium plating
Nickel (passive)
Copper
Nickel (active)
Cast iron
Steel
Lead
Tin
Indium
Aluminum
Uranium (pure)
Cadmium
Beryllium
Zinc plating (see galvanization)
Magnesium