Magnesium Quality – G97 Test Explained amp hours standard of the ASTM G97 test pays for itself even before the first year of service. ASTM G(). Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground. Find the most up-to-date version of ASTM G97 at Engineering

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Low Quality magnesium anode installation and premature anode failure is a concern that is not discussed enough in this industry.

Professional Produce Magnesium Sacrificial Anode ASTM B / ASTM G97

People often say to us, magnesium is magnesium — what is the difference. Herein lies the problem. The largest stakeholders in the entire process is often not exactly sure what they are buying.

For all they know, there could be a large rock inside the bag. The purpose of a magnesium anode is to protect a piece of valuable equipment from corrosion.


The quality of magnesium directly relates to the value of protection afforded by the Cathodic Protection system.

When you take a look at the below budget for installing magnesium anodes, it is clear that paying a couple cents more up front for quality anodes that meet the amp hours standard of the ASTM G97 test pays for itself even before the first year of service. Below is a sample budget for a 50 anode installation, taking 3 men one day to ashm 24 man hours.

This value was chosen for illustrative purposes only, and in no way claims any one manufacturer consistently manufactures anodes of this quality. So what does this tell us?

Magnesium Quality – G97 Test Explained – American Carbon Company

Of these charges, the difference in price g997 an anode meeting the industry requirement of 1. The next step is calculating the life of the equipment being protected. During that 20 year life span the magnesium anodes would likely have to be replaced about 2 times, once after 7 years and again after 14 these are only estimates and soil types and other surrounding conditions will cause this to vary.

  DIN 50602 PDF

If the first installation uses unacceptable anodes, you almost certainly will have to replace the anodes at least 3 times during the life of the equipment. Now this may be a very ast, calculation, but the basic principle will always hold true. For a more detailed analysis, please view this PDF which breaks the process down further G97 Explained.

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Total Cost per Anode: