Quality Substrate Material
Our magnesium drive-in anode is manufactured under the ASTM B843–M1C standard for high potential or ASTM B843–AZ63B standard for standard potential, in the following composition:
|Element||High Potential (ASTM B843 – M1C)||Standard Potential (ASTM B843 – AZ63B)|
|Aluminum (Al)||0.01%||5.3 – 6.7%|
|Manganese (Mn)||0.5 – 1.3%||0.15 – 0.7%|
|Zinc (Zn)||—||2.5 – 3.5%|
Different Electro-potential Options
There are two common cast magnesium anode available:
- Standard Magnesium Alloy Anode
A standard potential anode has a nominal corrosion potential of -1.55 volts (relative to a Cu/CuSO4 reference electrode). It is ideal for soil conditions where resistivity is under 20 Ω·cm.
- High Potential Magnesium Alloy Anode
High potential magnesium anodes have higher open circuit voltage and driving potential. It produces an open circuit potential of negative 1.7~1.75 volts, which is 20~30% greater than is typically found with conventional magnesium anodes. This yields more current output and achieves a greater efficiency; reaching a sufficient cathodic protection level whilst maintaining a lower consumption of the anodes. They are ideally suited for structures buried in soils with resistivities exceeding 2,000 Ω·cm, or for structures containing numerous corrosion clusters.
|Technical Measurement||High Potential||Standard Potential|
|Open Circuit Potential (-V)||1.7 ~ 1.75||1.5 ~ 1.55|
|Close Circuit Potential (-V)||1.58 ~ 1.62||1.45 ~ 1.50|
|Min. Current Capacity||500 A.h/lbs (1100 A.h/kg)||550 A.h/lbs (1230 A.h/kg)|
|Min. Current Efficiency||50%||55%|
Remarks: Open/close circuit potential is with respect to a Saturated Calomel Reference Electrode.
Angled point allows the anode to be directly driven into the ground with no requirement for pre-digging or augering of holes. One man can install it in minutes using only a hammer and screwdriver.
Our magnesium drive-in anode comes in three standard sizes below. The standard anode is supplied with 3 feet of AWG #12 TW lead wire. Other anode sizes and wire lengths are available upon request.
|JA-MG-DR0.5||0.5 lbs (0.23 kg)||Ø0.84″ (Ø21.5 mm)||12″ (305mm)|
|JA-MG-DR1.0||1.0 lbs (0.46 kg)||Ø1.32″ (Ø33.5 mm)||Ø1.32″ (Ø33.5 mm)|
|JA-MG-DR1.5||1.5 lbs (0.69 kg)||Ø1.32″ (Ø33.5 mm)||18″ (458mm)|