Magnesium Alloy Sacrificial Anodes 1

Product Description

Magnesium anodes are typically available in two alloy compositions. The first is typically a combination of *0% magnesium, 6% aluminum and 3% zinc. The second is *9% pure magnesium which is better suited to dry or resistant soil conditions or where the steel work is poorly coated with other corrosion barriers. The magnesium anode is most commonly used to protect propane tanks, ship hulls, submarine pipelines, piers, and heat exchangers.
 
Magnesium anodes are also available in a range of sizes and with several packaging options. The most popular magnesium anode size is the *7 pound (7.7 kg) anode although they are available in sizes ranging from a couple of ounces to over **0 pounds (*0 kg). Magnesium anodes are also frequently presented in a ready-to-use backfill package which consists of a degradable bag filled with an electrically conductive filling of powdered gypsum, bentonite clay, and sodium sulphate. The whole package is buried intact where the bag disintegrates over time. The filling eventually creates a good conductive layer around the anode which can ensure excellent results in resistive soils.
 
Magnesium anodes are available in a range of designs. Each type is specifically crafted to offer different conductive properties and connection options to suit particular types of structures or environments. Hull anodes, for instance, are designed to flush mount against the hulls of ships, dams, or tanks via built in steel straps. Drive-in anodes, on the other hand, are designed to be driven into the ground to protect buried propane tanks or steel pylons. Specialist anodes such as condenser and ribbon types may feature plastic coatings to increase anode life or offer higher than normal current carrying capacity.