American Carbon Magnesium anodes are available in all commonly known sizes as well as both standard alloys (and custom alloys if required). See below for a table of some of our standard sizes. We have also custom manufactured a wide array of unique sizes, strap orientations and machining requirements to meet customer needs. We also specialize in creating mold for any anode size you might require.
Standard Cast Magnesium Anodes in both High Potential and Low Potential Alloys
| Common Name | Anode Weight (lb) | Dimension A | Dimension B | Dimension C |
| 1R8 | 1 | 1-5/8″ Dia | NA | 8″ |
| 3D3 or 3S3 | 3 | 3-1/2″ | 3-3/4″ | 5″ |
| 5D3 or 5S3 | 5 | 3-1/2″ | 3-3/4″ | 8″ |
| 9D3 or 9S3 | 9 | 3-1/2″ | 3-3/4″ | 13-7/8″ |
| 17D3 or 17S3 | 17 | 3-1/2″ | 3-3/4″ | 25-1/4″ |
| 20D2 or 20S2 | 20 | 2-3/4″ | 3″ | 56-3/4″ |
| 32D5 or 32S5 | 32 | 5-1/2″ | 5-3/4″ | 19-7/8″ |
| 40D3 or 40S3 | 40 | 3-1/2″ | 5-3/4″ | 60″ |
| 48D5 or 48S5 | 48 | 5-1/2″ | 5-3/4″ | 30-1/8″ |
| 60D4 or 60S4 | 60 | 4-3/8″ | 4″ | 60″ |
Specialty Cast Magnesium Anodes
Although we can manufacture any of any shape or size, some of the more common specialty anodes that we manufacture are listed below. This table is not meant to be a specific list of dimensions but instead only a guideline of some of our capabilities. Drawings are available for any of these anodes upon request.
| Common Name | Anode Weight (lb) | Description |
| ½ lb Drive in Anode | ½ | 0.86” extruded anode, wired with 3’ wire and metal clamp. The end is cut for hand driving. |
| 1 lb Drive in Anode | 1 | 1.561” extruded anode, wired with 3’ wire and metal clamp. The end is cut for hand driving. |
| E2 | 2 | 2 lb round anode with a tapped center hole |
| 2R5 | 2 | 2 lb anode with a tapped center hole |
| 7.5S | 7.5 | 7.5 lb square condenser anode with a center hole |
| 15S | 15 | 15 lb square condenser anode with a center hole |
| 12HW | 12 | 12 lb anode with 2 straps for surface bolting applications |
| 24HW | 24 | 24 lb anode with 2 straps for surface bolting applications |
| T-16 | 16 | 16 lb anode with 2 straps for surface bolting applications |
| T-32 | 32 | 32 lb anode with 2 straps for surface bolting applications |
| T-36 | 36 | 36 lb anode with 2 straps for surface bolting applications |
| 50R8 | 50 | 50 lbs round anode with multiple strap and insert configurations |
| 100R16 | 100 | 100 lbs round anode with multiple strap and insert configurations |
Extruded Magnesium Anodes
We are also able to provide almost any size required of extruded magnesium anodes. American Carbon can provide any of the diameters listed below in lengths anywhere from 6” to 38’ long.
| Product Code | Diameter (inch) | Steel Core Diameter (inch) | Weight (lb/ft) |
| 40-800 | 0.84 | 0.135 | 0.46 |
| 40-801 | 1.050 | 0.135 | 0.68 |
| 40-802 | 1.315 | 0.135 | 1.07 |
| 40-803 | 1.561 | 0.188 | 1.50 |
| 40-804 | 2.024 | 0.188 | 2.50 |
| 40-805 | 2.562 | 0.188 | 4.00 |
| 40-806 | 3.021 | 0.188 | 5.50 |
| 40-807 | 0.750 | 0.135 | 0.37 |
| 40-808 | 0.550 | 0.079 | 0.19 |
| 40-810 Ribbon | 3/4” x 3/8” x 1,000’ coils | 0.135 | 0.24 |
All American Carbon Magnesium Anodes are constructed under the following chemical composition as outlined by ASTM B843.
| Element | Low Potential (AZ63 Gr. A) | High Potential (HP) |
| Magnesium (Mg) | Balance | Balance |
| Aluminum (Al) | 5.30-6.70 | 0.01 max |
| Manganese (Mn) | 0.15 – 0.7 | 0.5 – 1.3 |
| Zinc (Zn) | 2.5-3.5 | 0 |
| Silicon (Si) (Max) | 0.10 | 0.05 |
| Copper (Cu) (Max) | 0.02 | 0.02 |
| Nickel (Ni) (Max) | 0,002 | 0.001 |
| Iron (Fe) (Max) | 0.003 | 0.03 |
| Other Impurities (Max) | 0.3 | 0.3, 0.05 each |
The electrochemical component of our anodes is discussed further on the Quality Considerations page but it is also governed by the ASTM G97 test and the electrochemical components will be as follows:
| Electrochemical Properties | Low Potential (AZ31) | High Potential (HP) |
| Open Circuit Voltage (-V respect to Cu/CuSO4) | 1.54 – 1.61 | 1.70 – 1.76 |
| Closed Circuit Voltage (-V respect to Cu/CuSO4) | 1.52 – 1.57 | 1.64 – 1.73 |
| Actual Capacity (A•hr/lb) | ≥ 501.7 | ≥ 500 |
| Current Efficiency (%) | ≥ 50 | ≥ 50 |
Our product technical data sheets are also available in PDF form for nearly all of the products listed above (specialty anodes by request). Please click below to download a PDF version of the data sheet.
A copy of the MSDS technical information for all magnesium anodes can be found in PDF form on the below link.