

Why
BADGERCOAST?
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MIL-A-18001K Chemistry
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GALVALUM III Chemistry
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High Efficiency in Many Environments
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Custom Shapes and Standoffs
Perfect For...
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Ship Hulls & Offshore Platforms
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Buried Pipelines & Storage Tanks
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Heater Treaters & Oilfield Equipment
BADGERCOAST Galvanic Anodes for Cathodic Protection
BADGERCOAST galvanic anodes deliver long-lasting corrosion protection in freshwater, brackish water, saltwater, high-temperature, and underground environments. Our zinc anodes, meeting MIL-A-18001K and ASTM B418 Type I & II standards, provide reliable performance across diverse applications. Our aluminum anodes, cast from Galvalum III and Galvalum III DCW alloys, offer 85-95% efficiency, high current capacity, and a low consumption rate, making them ideal for offshore structures, pipelines, storage tanks, and industrial systems. BADGERCOAST anodes are available in custom and standard configurations, including heater treater anodes for oilfield applications. Whether for submerged infrastructure, high-temperature processing, or cathodic protection projects, BADGERCOAST delivers proven performance, cost-effective protection, and industry-certified reliability.
Applications
BADGERCOAST galvanic anodes provide reliable, long-lasting corrosion protection for marine, offshore, oil and gas, and infrastructure environments. Available in high-purity zinc (meeting MIL-A-18001K and ASTM B418 Type I & II standards) and proprietary aluminum alloys (Galvalum III and Galvalum III DCW), these anodes are engineered to perform across a range of salinities and temperatures. Zinc anodes excel in colder brackish or seawater environments where lower driving voltages and uniform dissolution are beneficial. Aluminum anodes offer a higher ampere-hour output, making them ideal for warm marine and high-resistivity applications, particularly where weight and long-term performance are critical.
Typical applications include ship hulls, ballast tanks, and submerged piping systems; offshore structures such as jackets, risers, and subsea modules; and marine assets like piers, docks, and seawalls. BADGERCOAST anodes are also commonly installed on above ground storage tanks, buried pipelines, and utility infrastructure subject to tidal or coastal corrosion risks. For oilfield use, BADGERCOAST offers heater treater anodes with victaulic fitting caps, assembled for compatibility with standard production tank fittings. These cast anodes also support embedded cathodic protection in reinforced concrete elements, such as bridge pilings and deck slabs, reducing long-term maintenance costs on civil structures.
Each anode is offered in standard and custom configurations - including weld-on, bolt-on, and core-cast options - and is compatible with both new construction and retrofit projects. Whether you're protecting mission-critical infrastructure in the Gulf or replacing dockside anodes in the Great Lakes, BADGERCOAST provides consistent performance and flexible deployment across industries and geographies.
Manufacturing Process
BADGERCOAST anodes are manufactured using a precision-controlled casting process to ensure uniform metallurgical properties and consistent performance in the field. Each zinc or aluminum alloy is melted in a clean, monitored environment to maintain the required purity and alloy chemistry - including strict compliance with MIL-A-18001K, ASTM B418 (Type I & II) for zinc, and Galvalum III or Galvalum III DCW standards for aluminum. Metallurgical quality is verified with real-time spectrographic analysis to ensure proper trace element control and optimal electrochemical behavior.
Once alloy composition is validated, the molten metal is poured into precision-engineered molds under controlled temperature conditions. Anodes are cast around steel cores, galvanized straps, or threaded inserts when specified, with consistent alignment and bonding to ensure structural integrity and optimal current distribution. Heater treater anodes are cast with integrated redhead or bluehead caps to facilitate straightforward field installation on standard oil production vessels.
After casting, each anode is inspected for uniformity, dimensional accuracy, and surface finish. Select anodes undergo electrochemical testing to verify open circuit potential, current capacity, and consumption rate. The final products are finished, labeled, and packaged according to customer specifications — whether for offshore deployment, shipboard mounting, pipeline burial, or structural retrofitting.
From core-cast hull anodes to custom-fabricated heater treater units, every BADGERCOAST anode is built to deliver consistent protection and long service life, backed by rigorous QA procedures and decades of field-tested performance.
Specifications
Our product technical data sheets are also available in PDF form. Please click below to download a PDF version of the data sheet.
Chemical Composition Percentage | Alloy 701.1 | GALVALUM III | GALVALUM III DCW |
|---|---|---|---|
Aluminum (Al) | Balance | Balance | Balance |
Indium (In) | 0.016% - 0.02% | 0.01% - 0.02% | 0.016% - 0.025% |
Zinc (Zn) | 4.75% - 5.75% | 2.0% - 6.0% | 4.75% - 5.25% |
Silicon (Si) | 0.08% - 0.12% | 0.08% - 0.12% | 0.08% - 0.12% |
Copper (Cu) | 0.003% Max | 0.006% Max | 0.003% Max |
Iron (Fe) | 0.12% Max | 0.09% Max | 0.06% Max |
Cadmium (Cd) | 0.002% Max | 0.002% Max | 0.002% Max |
Others, each | 0.02% Max | 0.02% Max | 0.02% Max |
Others, total | 0.05% Max | 0.05% Max | 0.05% Max |
Electrochemical Properties Performance | Alloy 701.1 | GALVALUM III | GALVALUM III DCW |
|---|---|---|---|
Circuit Voltage (-V respect to Cu/CuSO4) | 1.15 min | 1.15 min | 1.15 min |
Seawater Capacity (A•hr/lb) | ≥ 1150 | ≥ 1150 | ≥ 1150 |
Seabed Capacity (A•hr/lb) | 900 | 950 | 950 |
Consumption Rate (lb/A•yr) | 7.6 | ||
Electrochemical Properties Performance | Performance | ||
Circuit Voltage (-V respect to Cu/CuSO4) | 1.15 min | 1.15 min | 1.15 min |
Seawater Capacity (A•hr/lb) | ≥ 1150 | ≥ 1150 | ≥ 1150 |
Seabed Capacity (A•hr/lb) | 900 | 950 | 950 |
Consumption Rate (lb/A•yr) | 7.6 |
Chemical Composition Percentage | ASTM B418 Type 1 | Mil Spec A-18001 |
|---|---|---|
Zinc (Zn) | Balance | Balance |
Aluminum (Al) | 0.005% Max | 0.1% - 0.5% |
Cadmium (Cd) | 0.003% Max | 0.025% - 0.07% |
Iron (Fe) | 0.0014% Max | 0.005% Max |
Copper (Cu) | 0.002% Max | 0.005% Max |
Lead (Pb) | 0.003% Max | 0.006% Max |
Chemical Composition Percentage | Alloy 701.1 | GALVALUM III | GALVALUM III DCW |
|---|---|---|---|
Aluminum (Al) | Balance | Balance | Balance |
Indium (In) | 0.016% - 0.02% | 0.01% - 0.02% | 0.016% - 0.025% |
Zinc (Zn) | 4.75% - 5.75% | 2.0% - 6.0% | 4.75% - 5.25% |
Silicon (Si) | 0.08% - 0.12% | 0.08% - 0.12% | 0.08% - 0.12% |
Copper (Cu) | 0.003% Max | 0.006% Max | 0.003% Max |
Iron (Fe) | 0.12% Max | 0.09% Max | 0.06% Max |
Cadmium (Cd) | 0.002% Max | 0.002% Max | 0.002% Max |
Others, each | 0.02% Max | 0.02% Max | 0.02% Max |
Others, total | 0.05% Max | 0.05% Max | 0.05% Max |
Electrochemical Properties Performance | Alloy 701.1 | GALVALUM III | GALVALUM III DCW |
|---|---|---|---|
Circuit Voltage (-V respect to Cu/CuSO4) | 1.15 min | 1.15 min | 1.15 min |
Seawater Capacity (A•hr/lb) | ≥ 1150 | ≥ 1150 | ≥ 1150 |
Seabed Capacity (A•hr/lb) | 900 | 950 | 950 |
Consumption Rate (lb/A•yr) | 7.6 | ||
Electrochemical Properties Performance | Performance | ||
Circuit Voltage (-V respect to Cu/CuSO4) | 1.15 min | 1.15 min | 1.15 min |
Seawater Capacity (A•hr/lb) | ≥ 1150 | ≥ 1150 | ≥ 1150 |
Seabed Capacity (A•hr/lb) | 900 | 950 | 950 |
Consumption Rate (lb/A•yr) | 7.6 |
Chemical Composition Percentage | ASTM B418 Type 1 | Mil Spec A-18001 |
|---|---|---|
Zinc (Zn) | Balance | Balance |
Aluminum (Al) | 0.005% Max | 0.1% - 0.5% |
Cadmium (Cd) | 0.003% Max | 0.025% - 0.07% |
Iron (Fe) | 0.0014% Max | 0.005% Max |
Copper (Cu) | 0.002% Max | 0.005% Max |
Lead (Pb) | 0.003% Max | 0.006% Max |
Product Illustrations


