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Ted Mooney, P.E. RET
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Corrosion of stainless steel cable in Utah streams
To determine water quality standards, we have deployed a large number of temperature loggers in Utah streams. To anchor these loggers, we used 1/8" stainless steel braided cable, grade unknown (standard hardware stuff). At three or four locations, the cable had corroded through at the water-air interface after two to three months. The stream suffers from diurnally low dissolved oxygen, but pH is within normal range. I have installed and removed hundreds of these using the same cable, and never seen this before. Any suggestions on what could cause this?
Alex Andersonscientist - Salt Lake City, Utah
December 2, 2009
Hi, Alex. Low quality stainless steel is such a pervasive contemporary problem now that most stainless is coming from China that I'd suspect the cable before searching for some special phenomena occurring in this particular stream.
Regards,
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Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
December 2, 2009
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