ProMag Standard Potential Magnesium Anodes for Soil Use

  • Description

Description

Description

ProMag H-1 alloy, commonly known as standard potential magnesium, is an excellent choice for use in cathodic protection systems in average soil conditions. Typically, ProMag H-1 anodes produce a minimum open circuit potential of 1.52 volts with respect to CuCuSO4. Therefore, the driving potential of the H-1 cathodic protection anodes exceeds that of aluminum or zinc, but is still lower than a high potential magnesium anode.

At Farwest Corrosion, we attach a copper lead wire (size, length and insulation type as specified) to the H-1 anode and seal the connection interface. If required, the H-1 anode will be packaged in a cloth bag with prepared backfill mixture of 75% gypsum, 20% bentonite and 5% sodium sulfate. The backfill mixture works to maintain moisture around the anode and lowers the anode to earth resistance. The packaged anodes are shipped on pallets in plastic bags that must be removed prior to installation.

ProMag Anode pdf data sheet

Typical Chemical Analysis
   Aluminum    5.3 – 6.7%
   Zinc    2.5 – 3.5%
   Manganese    0.15 – 0.7%
   Silicon    0.10% max
   Copper    0.02% max
   Nickel    0.002% max
   Iron    0.003% max
   Others    0.30% max
   Magnesium    Remainder

ProMag Anode Dimensions

Anode
Size
Bare
Weight
Packaged
Weight
Bare Packaged
A B C D E
1S1* 1 10 1-1/2″ 1-5/8″ 9″ 4″ 12″
3D3* 3 12 3-1/2″ 3-1/2″ 5-1/2″ 6″ 10″
5D3* 5 16 3-1/2″ 3-1/2″ 9.5″ 6″ 14″
9D3* 9 27 3-1/2″ 3-1/2″ 13.5″ 6-1/2″ 19″
17D3* 17 45 4″ 3-1/2″ 25-1/2″ 6-1/2″ 29″
20D2 20 70 2-3/4″ 2-3/4″ 56-3/4″ 6-1/2″ 62″
32D5* 32 70 6″ 5-3/4″ 21″ 8-1/2″ 28″
48D5* 48 105 5-3/4″ 5-3/4″ 30-1/2″ 7-3/4″ 38″
60D4 60 126 4-1/2″ 4-1/2″ 60-1/2″ 7″ 64″
* Standard inventory sizes. Other special anode configurations are available.
Please contact Farwest for details.Notes:
   1. Packaged weights and dimensions are approximate and can vary slightly.
   2. Ingot weight may be + or – 2%.