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Electro-chemical Table
| Material |
Potential, volts |
| Magnesium alloy sheet |
-1.58
|
| Zinc base die casting |
-1.09
|
| Galvanized iron |
-1.06
|
| Aluminium alloy (14% Zn) casting |
-0.91
|
| Aluminium alloy (5% Mg) |
-0.82
|
| Cadmium plating |
-0.78
|
| Aluminium alloy extrusion |
-0.72
|
| Mild steel |
-0.70
|
| Cast iron, grey |
-0.70
|
| Duralumin (Al/Cu) alloy |
-0.60
|
| Chromium plating on mild steel |
-0.53
|
| Brass |
-0.30
|
| Stainless steel, austenitic |
-0.25
|
| Copper |
-0.25
|
| Gunmetal |
-0.24
|
| Aluminium bronze |
-0.23
|
| Phosphor bronze |
-0.22
|
| Millscale (Fe3O4) |
-0.18
|
| Monel (nickel alloy) |
-0.16
|
| Nickel plating |
-0.14
|
| Silver plating |
-0.01
|
| Platinum |
+0.20
|
| Graphite |
+0.30
|
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