GALVANIC SCALE No TYPE V 1 Graphite 0.25 2 Platinum 0.22 3 Ni-Cr-Mo alloy C 0.06 4 Titanium 0.05 5 Nickel-Iron-Chromium alloy 825 0.04 6 Alloy “20” Stainless Steels, cast & wrought 0.03 7 *Stainless Steel - Type 316, 317 (passive) -0.05 8 Nickel-Copper alloys 400, K-500 -0.08 9 *Stainless Steel -Types 302 304 321 347(passive) -0.08 10 Silver -0.12 11 Nickel 200 -0.15 12 Silver Braze Alloys -0.15 13 *Nickel-Chromium alloy 600 (passive) -0.16 14 Nickel-Aluminium Bronze -0.18 15 70-30 Copper-Nickel -0.21 16 Lead -0.23 17 *Stainless Steel - Type 430 (passive) -0.24 18 80-20 Copper-Nickel -0.24 19 90-10 Copper-Nickel -0.25 20 Nickel Silver -0.26 21 *Stainless Steel - Type 410 416 (passive) -0.27 22 Tin Bronzes (G&M) -0.27 23 Silicon Bronze -0.28 24 Manganese Bronze -0.3 25 Admiralty Brass, Aluminium Brass -0.31 26 Pb-Sn Solder (50/50) -0.32 27 Copper -0.33 28 Tin -0.33 29 Naval Brass, Yellow Brass, Red Brass -0.35 30 Aluminium Bronze -0.35 31 *Stainless Steel - Type 316 317 (active) -0.39 32 *Nickel-Chromium alloy 600 (active) -0.4 33 Austentic Nickel Cast Iron -0.49 34 *Stainless Steel - Type 302 304 321 347 (active) -0.51 35 *Stainless Steel - Type 410 416 430 (active) -0.51 36 Low Alloy Steel -0.6 37 Mild Steel, Cast Iron -0.66 38 Cadmium -0.72 39 Aluminium Alloys -0.88 40 Zinc -1.01 41 Magnesium -1.61
