Summary for corrosive potential assessment Discussion
corrosive potential assessment is the core issue here: Russell Dickson asked how to judge a site’s corrosion risk during a short visit, especially when moving systems into climates unlike those in the U.S. He said his current site reviews cover mechanical and electrical conditions but not corrosive exposure such as proximity to salt water, and he wanted testing or criteria to guide the assessment. The only answer in the thread, from McHenry, Illinois, did not give a formal test method; instead, it asked what alloys are involved and emphasized that corrosion resistance depends heavily on the actual environment. The answerer also cautioned that customers should not be guaranteed stainless steel corrosion resistance because environmental conditions and accidental abuse are outside the supplier’s control. Proximity to a saltwater coastline was singled out as a major factor. The thread also points readers to Seymour K. Coburn’s book, "Atmospheric Factors Affecting the Corrosion of Engineering Metals."
Q. My company has been emplacing systems in the US for many years. We are now starting to go to countries that have significantly different climate. A concern is that the systems will be placed in environments that exceed design criteria. I will have maybe 5 days to review a site. Our site assessments look at mechanical and electrical parameters for the site, but not corrosive potential (for example near salt water or not).
I am interested in finding information on what testing or assessment criteria should be used to determine the corrosion potential at a site.
Thanks in advance.
Russell Dickson
Quality Engineer – Burlington, Vermont
July 12, 2014
“Atmospheric Factors Affecting the Corrosion of Engineering Metals”
by Seymour K Coburn

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A. Russell,
What alloys are involved in your systems? We generally recommend to our customers that they never make any guarantees on the corrosion resistance of stainless steel as they have no control over the customer’s environmental conditions and/or other abuse the customer may accidentally or unwittingly inflict.
Proximity to a saltwater coastline is a big factor, yes.

Ray Kremer
Stellar Solutions, Inc.
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McHenry, Illinois

July 31, 2014
August 4, 2014
A. Should your organisation venture into Australia, there was a very comprehensive nationwide survey conducted by Industrial Galvanisers & the CSIRO over many years.
They used the Electrical Transmission Towers situated throughout the Country and assessed corrosive effects on these galvanised structures.
This resulted in a map of corrosive effects Country wide.
Some of the results are quite surprising considering the environments of this quite large continent.
These results can be accessed via the ww2.ingal.com.au files website.
Hope this helps,
Regards,
Bill
William Doherty
Trainer – Newcastle, NSW Australia