(no subject)

From: Steve Holtzman <waterdoc_at_earthlink.net>
Date: Tue, 11 Apr 2000 22:29:59 -0700
To all those who claim that stainless steel doesn't rust, you need to be
aware of several things. First as some people have pointed out, there are
different grades of stainless steel and there ability to stand up to salt
water varies.

Additionally, ss is susceptible to a type of corrosion called chloride
attack. Any solution that contains high levels of chlorides, is very
corrosive to stainless. Sea water, contains over 20,000 ppm of salt (sodium
chloride) dissolved in it. This is EXTREMELY corrosive and the corrosion
that it causes, produces cracks along the crystal boundaries of the alloy.

We NEVER use ss in situations where there are high levels of chlorides. Mild
steel will work much better. On the ocean, where things get wet with salt
water and there is a large amount of oxygen available, I would opt for a
nickel, cadmium, or chrome plated metal. They will hold up to salt water.

Steve Holtzman
Advanced Chemical Technology, LLC
Industrial Water Treatment
www.actglobal.net




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Received on Tue Apr 11 2000 - 22:32:51 PDT

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