Galvanic Series: compatibility_threshold
Galvanic (electrochemical) series for metals and alloys in flowing seawater at ambient temperature (10–30°C). Electrode potential ranges in volts vs SCE (saturated calomel electrode), galvanic group assignments, nobility rankings, anodic index values, and compatibility thresholds for 49 materials. Covers magnesium alloys, zinc, aluminum alloys, carbon steel, cast iron, stainless steels, copper alloys, brasses, bronzes, nickel alloys, titanium, and noble metals. Used for galvanic corrosion compatibility design and sacrificial anode selection.
| material category | material name | notes | potential typical V SCE (V) |
|---|---|---|---|
| compatibility_threshold | Adjacent_group_caution | 0.05V–0.20V difference: use insulating hardware in wet/immersed service | 0.2 |
| compatibility_threshold | Incompatible_threshold | Greater than 0.50V difference: avoid direct contact; use isolation, coatings, or cathodic protection | 0.5 |
| compatibility_threshold | Same_group_threshold | Materials within same galvanic group (≤0.05V difference) are compatible without special treatment | 0.05 |
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