Salt corrosion

[beano]

What is the quantitative corrosive effect of sea water compared to fresh water, distilled water, softened water

 

[MCelich]

Quantitative based on the salt content which provides the basis for electrolytic action is as follows:<br><br>Sea Water&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35,000<br>Lake Michigan&nbsp;&nbsp;&nbsp;170<br>Rivers&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;360 - 2600<br>Rain&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10<br>Distilled&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0<br><br>However, any rate of corrosion has to be based on material (polymer, metal, etc.), its composition (NI-AL-BRZ, Zinc,&nbsp;&nbsp;etc.) and whether it is in contact with other materials (galvanic corrosion), etc.

 

The salt content in seawater increases the corrosivity of water especially when aerated. The salts increases the conductivity which promotes electron flow through the water. The chlorides especially accelerate attack by breaking down protective surface films. <br><br>See more on corrosion information and solutions at <A HREF="

http://www.corrosionsource.com"

TARGET="_new">

http://www.corrosionsource.com</A>

- The One Stop Corrosion and Materials Resource.