Transcription of CORROSION - BlueScope
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CORROSION - BlueScope
CORROSION . DISSIMILAR. METALS. TECHNICAL BULLETIN CTB-12. Rev 3, November 2003. This issue supersedes all previous issues If two different metals are placed in electrical Figure 1: Galvanic Series of Metals and Alloys contact and bridged by an electrolyte, a in Sea Water current flows through the solution from the anodic to the cathodic or more noble metal. NOBLE (CATHODIC). As a result, the cathodic metal tends to be Gold protected but the anodic materials may suffer Platinum great CORROSION . Titanium Figure 1, shows a Galvanic Table which lists Graphite metals from the least active (noble) to the most Silver active metals. Such tables are of significant Stainless Type 316. value in drawing the attention of designers to Stainless Type 310. the dangers of bi-metallic CORROSION . The PASSIVE Stainless Type 304. tables, however, must be interpreted not only Stainless Type 302. on a basis of the potential difference between Stainless Type 430. the metals in the table, but the area Stainless Type 410.
If two different metals are placed in electrical contact and bridged by an electrolyte, a current flows through the solution from the anodic to the cathodic or more noble metal.
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