Galvanic Series of Metals and Alloys in Sea Water
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Positive Charge Anode(+)
Corroded end (anoxic, active, or least noble)
Magnesium Alloys
Zinc
Beryllium
Cadmium
Uranium
Aluminum
Indium
Tin
Stainless Steel 430
Lead
1010 Steel
Cast Iron
Stainless Steel 410
Copper
Nickel
AM 350
Chromium
Stainless Steel 350, 310, 304
Stainless Steel 430, 410
Stainless Steel 13-8, 17-7 PH
Brass, Yellow, Navel
Stainless Steel 316L
Bronze 220
Copper 110
Stainless Steel 347
Copper-Nickel 715
Stainless Steel 202
Monel 400
Stainless Steel 201
Stainless Steel 321, 316
Stainless Steel 309, 13-8, 17-7 PH
Stainless Steel 304, 301, 321
Stainless Steel 201, 316L
Stainless Steel 286
AM355
Stainless Steel 202
Carpenter 20
AM355
Titanium Alloys
AM350
Silver
Palladium
Gold
Rhodium
Platinum
Carbon/Graphite
Negative Charge Cathode(-)
Protected End (cathodic, passive, or more noble)
Regards,
Frank Norman
Manufacturing Support Engineer
Raytheon, Space and Airborne Systems (SAS)
(805)879-2745
[log in to unmask]
Steve Gregory <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
09/11/03 09:16 AM
Please respond to "TechNet E-Mail Forum."; Please respond to SteveZeva
To: [log in to unmask]
cc:
Subject: Re: [TN] Zinc Plating Finish
Hi Victor!
What will probably happen is that the Zinc will start to corrode because
of the galvanic action between itself and the tin, or tin / lead. Go to:
http://www.ccfast.com/ccfcorrosion.html
There you will see a Galvanic Series chart, and a simple explaination
about Galvanic action. Zinc, and Tin or Tin / Lead isn't all that far
apart in the chart, but far enough that the Zinc will corrode.
-Steve Gregory-
Fellow TechNetters:
What are the exposures of having or selecting a ZINC plating finish for
an ELECTRICAL CONTACT such as a solder less
crimp connector and straight pin connector. What can occur if these
finishes are mixed mated with a SnPb or Sn finish surface.
Victor,
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