Galvanic Corrosion Chart


Galvanic Corrosion Chart
All dissimilar materials have the potential to react with each other when they are brought together in the presence of a
catalyst. In most circumstances this reaction is so mild as to be of no importance, but when the wrong materials are
used in combination and then exposed to an electrolyte such as water the effects can become much more noticeable.
For applications where humidity is low then you can generally ignore galvanic corrosion. If on the other hand you are
working on a project for use in damp conditions or outside then it is best to pay some regard to the possible effects of
galvanic corrosion.
As a rule it is best to use metals which are as close together as possible in the table below. Doing this will help to
eliminate any possibility of galvanic corrosion.
If you do have to mix materials then take a look at the galvanic compatibility section
Active (Anodic) Most Likely To Corrode
Magnesium alloys
Zinc (hot-dip, die cast, or plated)
Aluminium 1100, 3003, 3004, 5052, 6053
Tin (plated)
Steel 1010
Iron (cast)
Stainless steel 410 (active)
Copper (plated, cast, or wrought)
Nickel (plated)
Chromium (Plated)
Stainless steel 301,304,310 (active)
Stainless steel 430 (active)
Nickel-silver (18% Ni)
Stainless steel 316L (active)
Bronze 220
Copper 110


00 votes

Related Articles

Related forms

Related Categories

Parent category: Education
Page of 3