The Galvanic Scale of metals comparative reactivity.
1 MAGNESIUM
2 ZINC
3 ALUMINUM ALLOYS
5 MILD STEEL
6 CAST IRON
7 NICKLE CAST IRON
8 ALUMINIUM BRONZE
9 BRASSES
10 TIN
11 COPPER
12 LEAD-TIN SOLDERS
13 ALUMINIUM BRASS
14 MANGANESE BRONZE
15 SILICON BRONZE
16 TIN BRONZES (GUNMETAL)
17 STAINLESS STEEL 400 SERIES
19 NICKEL -CHROMIUM ALLOYS
20 LEAD
21 COPPER NICKEL
22 BRONZES
23 NICKEL -SILVER
24 COPPER -NICKEL ALLOYS
25 SILVER SOLDER
26 NICKEL
27 SILVER
28 STAINLESS STEELS 302, 304
29 MONEL
30 STAINLESS STEELS 316, 317
31 TITANIUM
32 GOLD
33 PLATINUM
34 GRAPHITE
CATHODIC END (noble)