We are exhibiting

Jennings Anodes USA will be exhibiting at the following Corrosion and Oil & Gas related conferences: 


April 15th -19th – Phoenix Convention Center, Phoenix, AZ 

Chris Jennings will be presenting at the 2018 NACE International Corrosion Conference on:  A Comparison of the Structure and Consumption Rate for Centrifugally Cast Anodes Compared With Die-Cast Anodes – April 17th 9:10am Room: 122B-C.
You can preview the research report this presentation is based on here

To register for this event click here


April 30th – May 3rd – NRG Park, Houston, TX’


MAY 15th -17th — Virginia University, Morgantown, WV.

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Research Paper: Evaluation of corrosion of the poor surface finish at the pouring basin of the high silicon cast iron tube anodes

The report outlines the corrosion test that was carried out on the anode around the pouring bush. The test was carried out for 60 days in an electrolyte of 3% sodium chloride. The corrosion rate was 298  g/A.Year     

To view the full research paper you can download the articles here and here.

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Research Paper: Metallurgical development and product evaluation of high silicon cast iron tube anodes

Excerpt from our research paper: 

Metallurgical development and product evaluation of high silicon cast iron tube anodes 

Impressed Current Cathodic Protection (ICCP) plays a crucial role in the protection of vital infrastructure such as pipelines, storage tanks and structures from corrosive destruction. A popular cost effective type of semi0consumable anode used for ICCP is manufactured from high silicon cast iron (HSCI). HSCI is an acid resistant cast iron that contains 14 to 16% silicon and less than 1% carbon that has been used for over 100 years in the Chemical Industry for acid containment and processing. The initial development of high silicon cast iron dates back to 1908 (ref 1) and although the alloys were characterized by excellent corrosion resistance, these alloys still have known weaknesses such as low strength and toughness, high hardness and associated brittleness and cannot be hot worked or machined. Parts made from the alloy have to be made by a casting process and therefore have the associated imperfections of cast metal such as porosity and shrinkage defects. 

To manufacture an anode with a high level of integrity and durability there have been several developments and innovations in the cast metal technology. These involve methods to reduce the gas content and to refine the microstructure and to refine and compact the graphite shape by the micro additions of boron and rare earth additions. In addition the application of centrifugal casting has been widely used to ensure required metal feeding and avoidance of inter0dendritic shrinkage porosity. 

Since anodes are buried underground and become inaccessible for maintenance and are required to have an operational life in excess of 20 years, in addition to the developing the appropriate mechanical integrity, there is an essential requirement to validate that the anodes will have an appropriate level of corrosion resistance. A review was carried out of the various methods that have been used to assess and to validate the corrosion resistance of anodes. The main sources of information technology for this type of review are NIST, NACE International and ASTM sources of information and guidance. One of the earliest studies on Duriron (an old proprietary name for high silicon cast iron) in 1957 by the National Bureau of Standards demonstrated the successful application of a potentiodynamic method. (ref 2)  In addition there were other approaches based on accelerated corrosion and weight loss methods. (ref 3) 

This project was carried out to compare the corrosion performance of centrifugally cast anodes made by Specialist Castings and chill cast anodes with a sand core made by Anotec. 

Potentio-dynamic test were carried out in accordance with ASTM 59 and ASTM G5. In addition three corrosion tests have been examined to assess their performance as accelerated tests to evaluate the anode quality and consistency. 

Based on the results of the corrosion test work the centrifugally cast anode material was found to have superior corrosion resistance. The improved corrosion resistance determined by four different methods was of the order of 20% for the hydrochloric acid test, 30% for the nitric acid electrolytic etch method and 20% for the electrolytic 3% sodium chloride test. The improvements were attributable to higher integrity cast product and lower inter0dendritic porosity. This was confirmed by metallography and measurement of relative density. The measurement of the relative density of the samples confirmed the lower levels of porosity in the centrifugally cast anode material.  

To view the full research paper you can download the article here.

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Jennings Anodes new site and joint venture with Yuxi.

We are Jennings Anodes USA and we are proud to introduce you to our new site and American operations.

Jennings Anodes USA is the result of a joint venture between Specialist Castings UK and Yuxi China, both global leaders in the manufacture and production of anodes and cathodic protection.

Combing joint technical knowledge and experience of over 40 years in manufacturing and supplying high quality anodes to suppliers all over the world, we have formed a US-centric operation that will allow us to cater to our American markets in a responsive and innovative way, offering both impressed current protection as well as sacrificial anodes.  

sacrificial anode

Yuxi and Specialist Castings already collaborate to provide European operations, combining the best of both operations.  Yuxi’s factories in China produce magnesiumaluminiumzinc and MMO anodes, in addition to cathodic protection accessories.  Specialist Castings has over 30 years’ in the cathodic protection industry and is the only manufacturer capable of producing tubular anodes that can consistently pass x-ray inspection at level 1 and level 2 criteria.  Following over 7 years of investment and technical development between the two partners, we have developed foundries to become a world-leader in qualified foundries producing cathodic protection anodes.  

With our incredible investment in technology and innovation , we are able to produce the highest quality anodes at competitive prices.   We pride ourselves on producing some of the highest standard anodes available, and our new operation means that we can store stock directly in the USA for swift delivery to our customers.  

We hope that you have enjoyed the brief introduction to Jennings Anodes USA and do not hesitate to contact us for you anode and cathodic protection requirements.


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