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" 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.

Cast Magnesium Anodes
Extruded Magnesium Anodes

A copy of the MSDS technical information for all magnesium anodes can be found in PDF form on the below link.

40 Series MSDS