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Help CenterZinc Sacrificial Anodes for Shipping & Offshore Industries
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Specifications
Zinc Sacrificial Anodes for Shipping & Offshore IndustriesHULL, BALLAST TANK AND CONDENSOR CAST ZINC ANODES
Protection for Marine Environments
Stopping corrosion begins with selecting an appropriate protection material. On many marine type structures, this material is zinc. To address the demand for this protective material, Corrpro manufactures hull, ballast tank, and condenser zinc anodes for use on structures in brackish and saltwater environments. The anodes are cast using 99.99%-pure high-grade zinc, and are alloyed to meet military specification MIL-A-19001 and the ASTM-B-418, Type I chemical composition standard. Through the addition of nominal percentages of aluminum and cadmium, Corrpro zinc anodes are resistant to the formation of zinc hydroxide around the anode surface, which restricts current flow and can shorten anode life. Their unique composition also allows for a current capacity of 354 amp.-hrs./lb., and an open current voltage of 1.05 (with respect to an Ag/AgCl reference cell).
All Corrpro marine zinc anodes are manufactured using galvanized steel cores. By galvanizing the cores, a stronger bond is created, thus minimizing the chance for core separation and anode defect. The cores are available in strap, pipe, or rod configurations, allowing numerous mounting possibilities. Other measures taken to ensure quality include the performance of chemical analysis and electrochemical tests.
Typical Applications
Corrpro hull, ballast tank, and condenser anodes are designed for use on ships, vessels, piers, pilings, and other metal structures in brackish and saltwater environments. The use of these anodes should be avoided in areas where temperatures may exceed 140°F, or which contain high alkalinity (above 9.5 pH). This is because zinc is prone to polarity reversal in these areas.
Chemical Composition | |
| Element | Content % |
| Al | 0.1-0.5 |
| Cd | 0.02-0.07 |
| Fe | 0.005 max |
| Pb | 0.006 max |
| Cu | 0.005 max |
| Zinc | remainder |
| Magnesium | Remainder |
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