Pipeline Corrosion Control

Aluminum Sacrificial Anodes for the Marine Applications by Farwest Corrosion

Created by: Pipeline Corrosion Control

Last updated 11/2025

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Description

Typical Chemical Composition Element Percentage Indium (In) Zinc (Zn) Silicon (Si) Copper (Cu) Iron (Fe) Cadmium (Cd) Others, each Others, total Aluminum 0.016 to 0.02% 4.75 to 5.75% 0.08 to 0.12% 0.003% Maximum 0.12% Maximum 0.002% Maximum 0.02% Maximum 0.05% Maximum Remainder Performance Characteristics Anode Capacity Potential (Calomel) Consumption Rate 1150 amp hours per pound (Minimum) 1.080 volts (Minimum) 7.6 pounds per amp year Available Sizes Aluminum anodes are available in many different shapes, weights, and core configurations. While many of these configurations are listed in the following charts, many more anodes are available but not shown. For assistance selecting the appropriate anode, contact a Farwest customer service representative for assistance. AnodeNumber Weight (lbs) Length (in) Width (in) Height CoreDimensions (in) Alum. Core La Lc Wb Wt H (in) 10FM 9 1 12 16 3½ 3½ 2½ 3/16 x1¼ 20FM 18 2 20 25 3 4½ 2½ 3/16 x1½ 29FM 26 3 24 29 4½ 5½ 2½ 1/4" x 1½ 37FM 34 3 36 41 3 5 2½ 3/16 x1½ 94FM 87 7 54½ 62 4 4½ 3¾ 1/4" x 1½ 110FM 101 9 77 84 4 4½ 3 3/8 1/4" x 1½ 144FM 135 9 72 84 7 8 3 1/4" x 1½ 270FM 245 25 90 102 6¾ 7¼ 4 1/4" x 2½ AnodeNumber Weight (lbs) Length (in) Width (in) Height CoreDimensions (in) Alum. Core La Lc Wb Wt H (in) 11FM 9 2 12 10 5 6 1½ 3/16 x1¼ 40FM 35 5 18 17 9 9 2¼ 1/4 x 2 61FM 56 5 18 17 9 9 3 5/8 1/4 x 2 80FM 76 4 48 10 4 4 4 1/4" x 1½ 95FM 91 4 72 13¾ 7 7¾ 2 1/4" x 1½ 144FM 140 4 72 14 7 8 3 1/4" x 1½ 284FM 280 4 72 14 7 8 6 1/4" x 2½ AnodeNumber Weight (lbs) Length (in) Width (in) Height CoreDimensions (in) Alum. Core La Lc Wb Wt Wc H (in) 158FM 140 18 40 52 5¾ 6¾ 18¾ 5½ 3/8 x 2 237FM 212 25 60 68 5¾ 6¾ 12¾ 6 1/2 x 2 AnodeNumber Weight (lbs) Length (in) Width (in) Height CoreDimensions (in) Alum. Core La Lc Wb Wt H (in) 26RT 22 4 60 72 2 2 2 1/2 39RT 35 4 60 72 2 2½ 2¾ 1/2 89RT 80 9 86 98 2½ 3½ 3¼ 5/8 120RT 111 9 64 75 4 5 4 3/4 145RT 134 11 77 88 4 5 4 3/4 157RT 150 7 60 72 4¾ 5¼ 5½ 3/4 278RT 263 15 51 73 6¾ 7¼ 6½ 1