Our experience in producing galvanic anodes assures that you will receive top quality anodes that will effectively inhibit corrosion when used in a properly designed and maintained cathodic protection system.

Composition:

Galvotec's magnesium anodes conform in composition to the requirements of U.S. Government Specification MIL-A-21412A (Ships).  This 6% aluminum, 3% zinc alloy (AZ-63) usually provides the best combination of economy and operating characteristics in seawater or brackish water.

Galvanic Efficiency:

The current efficiency of Galvotec's magnesium anodes is nominally 55% in seawater and the current capacity is about 550 amp-hr/lb.  The open circuit potential of the magnesium alloy used is nominally -1.55 volts to a copper/copper sulfate half cell in seawater; the driving voltage to galvanized steel is about 0.70 volts, providing a relatively high current output per anode.  Both hull and condenser anodes are available with a plastisol (polyvinyl chloride) coating which serves as an excellent current barrier shield.

Applications:

Magnesium anodes are effective and economical corrosion fighters that for over 25 years have been protecting a variety of steel structures in salt, brackish and fresh water, including:

• Hulls of ships, barges, tugs and boats
• Ballast tanks of ore carriers and similar vessels
• Bulkheads
• Water storage tanks
• Piers and pilings
• Pipelines
• Heat exchangers
• Travelling screens

For further information, or to discuss your specific requirements, contact our sales office. 

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