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% |
| Silicon (Si) | 0.05% | 0.1% |
| Copper (Cu) | 0.02% | 0.02% |
| Nickel (Ni) | 0.001% | 0.002% |
| Iron (Fe) | 0.03% | 0.003% |
| Other Each | 0.05% | — |
| Others Total | 0.3% | 0.3% |
| Magnesium (Mg) | Remainder | Remainder |
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.
Easy Installation
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.
Customized Configurations
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.
| Item No. | Weight | Diameter | Length |
| 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) |
