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Salt corrosion

thread338-2214

Salt corrosion

Salt corrosion

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

RE: Salt corrosion

Quantitative based on the salt content which provides the basis for electrolytic action is as follows:

Sea Water       35,000
Lake Michigan   170
Rivers          360 - 2600
Rain            10
Distilled       0

However, any rate of corrosion has to be based on material (polymer, metal, etc.), its composition (NI-AL-BRZ, Zinc,  etc.) and whether it is in contact with other materials (galvanic corrosion), etc.

RE: Salt corrosion

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.

See more on corrosion information and solutions at http://www.corrosionsource.com - The One Stop Corrosion and Materials Resource.

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