UltraMag High Potential Magnesium Anodes for Cathodic Protection by Farwest Corrosion

Meets or Exceeds Industry Standards. Utilizes Industry Standard Ribbon Style Core


In cathodic protection, the most widely used sacrificial anodes are magnesium. When high potential magnesium anodes are required for high current applications, Farwest offers the UltraMag™ high potential magnesium anode.

The UltraMag anode is manufactured from high quality, primary magnesium under strict, state of the art production techniques, anode chemistry, testing and certification. For these reasons, the UltraMag anode meets or exceeds industry standards for high potential magnesium anodes. Please see our UltraMag Magnesium Anode white paper.

Production techniques and chemical composition insure that the UltraMag produces a driving potential that exceeds other sacrificial anodes, such as standard potential magnesium, aluminum or zinc. As a result, the UltraMag can produce more protective DC current for cathodic protection purposes.

At Farwest Corrosion, we attach a copper lead wire (size, length to and insulation type as specified) to the UltraMag anode and seal the connection interface.

As normally required, the anode is packaged in a cloth bag with a prepared backfill mixture that works to maintain moisture around the anode and lowers the anode to earth resistance.
UltraMag packaged anodes are shipped on pallets in plastic bags that must be removed prior to installation.

How to Order:

Please Specify:

  • The UltraMag anode size of your choice. Refer to the dimension and weight chart.
  • The quantity of anodes you require.
  • The lead wire gauge, stranding, length and insulation type. Our standard wire is 10 ft #12 AWG solid wire with THHN insulation, but other wire is easily substituted.
  • Whether the anode is to be provided as a bare or a packaged anode. If prepackaged, the anode is shipped in a prepared backfill consisting of 75% gypsum, 20% bentonite, and 5% sodium sulfate contained in a cloth bag.
  • Any other special requirements.

Should you have any questions concerning applications for the UltraMag anode, Farwest's team of engineers and sales professionals can assist you in the proper anode selection.

UltraMag Anode Chemistry*
Others each
0.01% max
0.50 - 1.3%
0.02% max
0.05% max
0.03% max
0.001% max
0.05% max


* Per ASTM B843 Industry Standard for M1C high potential magnesium anodes.

UltraMag Anode pdf data sheet

Anode Dimensions & Weights

Note:  Anode dimensions and weights are approximate and variations occur depending on many factors.


Anode Type Bare Weight Packaged Weight Bare Packaged
1R8 1 8 1-5/8"   8" 3-1/4" 10"
3D3 3 12 3-1/2" 3-3/4" 5" 5-1/2" 10"
5D3 5 17 3-1/2" 3-3/4" 8" 5-1/2" 14"
9D2 9 35 2-3/4" 3" 27" 5-1/2" 32"
9D3 9 27 3-1/2" 3-3/4" 13-7/8" 6" 17"
17D3 17 45 3-1/2" 3-3/4" 25-1/4" 6-1/2" 29"
20D2 20 70 2-3/4" 3" 56-3/4" 5-1/2" 66"
32D5 32 70 5-1/2" 5-3/4" 19-7/8" 8" 28"
40D3 40 100 3-1/2" 5-3/4" 60" 6-1/2" 66"
48D5 48 100 5-1/2" 5-3/4" 30-1/8" 8" 38"
60S4 60 126 4-3/8" 4" 60" 7" 64"