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Galvanic Corrosion Chart |
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What is a Galvanic Corrosion Chart?A
Galvanic Corrosion Chart is a chart that contains the galvanic or electrochemical series ranks of metals according to their
potential, generally measured with respect to the Standard Calomel Electrode
(S.C.E.). Frequently this condition arises because different metals are more easily fabricated into certain forms; an example might be a door frame manufactured from aluminium extrusions (aluminium extrudes extremely well into architectural sections), but with a door handle fabricated from stainless steel tube to exploit its higher strength and abrasion resistance. The table below reports the Corrosion potentials in flowing sea water at ambient temperature. The unshaded symbols show ranges exhibited by stainless steels in acidic water such as may exist in crevices or in stagnant or low velocity or poorly aerated water where Stainless Steel become active, while the shaded areas show the potentials of Stainless Steel when is in passive state.
Galvanic corrosion is a function of several different factors that needs to be carefully evaluated when assessing the likelihood to have galvanic corrosion. We suggest you to have a look also at our Galvanic Corrosion page and also at Galvanic Corrosion Links where you can find documents on Galvanic Corrosion. If you have a question on Galvanic Corrosion or you need more information pleaseor contact us |
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